Id%Version%Family%Infra family%Hybrid genus%Genus%Infra genus%Rank%Authors%Basionym author%Publishing author%Full name without family and authors%Publication%Collation%Publication year full%Name status%Remarks%Basionym%Replaced synonym%Nomenclatural synonym%Distribution%Citation type
30000992-2%1.3.2.1%Scrophulariaceae%%N%Penstemon%%gen.%Schmidel%%Schmidel%Penstemon%Icon. Pl., Ed. Keller%2%1763%%in Ill. Fl. N.U.S. ed. 2. 3: 182. 7 Jun. 1913) also designated the same lectotype.%%%%%tax. nov.
37899-1%1.2%Scrophulariaceae%%N%Penstemon%%gen.%Mitch.%%Mitch.%Penstemon%Acta Phys.-Med. Acad. Caes. Leop.-Francisc. Nat. Cur.%8: App. 214. 1748; D. Don, in Edinb. N.Phil. Journ. xix. (1835) 113%%%%%%%%unknown
37900-1%1.1%Scrophulariaceae%%N%Penstemon%%gen.%Mitch.%%Mitch.%Penstemon%Diss.%36 (1769).%%%%%%%%unknown
60470399-2%1.1.2.1%Scrophulariaceae%%N%Penstemon%albidi%sect.%Pennell%%Pennell%Penstemon sect. Albidi%Contr. U.S. Natl. Herb.%20(pt. 9): 325, 327%1920%%%%%%%tax. nov.
60470331-2%1.1%Scrophulariaceae%%N%Penstemon%ambigui%[infragen.unranked]%Rydb.%%Rydb.%Penstemon [infragen.unranked] Ambigui%Fl. Colorado [Rydberg]%306%1906%%%%%%%tax. nov.
60474757-2%1.1%Scrophulariaceae%%N%Penstemon%ambigui%sect.%(Rydb.) Pennell%(Rydb.)%Pennell%Penstemon sect. Ambigui%Contr. U.S. Natl. Herb.%20(9): 326, 333%1920%%Reference to the basionym indirect%Scrophulariaceae Penstemon [infragen.unranked] Ambigui Rydb.%%%%stat. nov.
60474758-2%1.1%Scrophulariaceae%%N%Penstemon%aurator%sect.%D.D.Keck%%D.D.Keck%Penstemon sect. Aurator%Bull. Torrey Bot. Club%65(4): 234%1938%nom. inval.    Latin description/diagnosis lacking%%%%%%tax. nov.
60470332-2%1.1.2.1%Scrophulariaceae%%N%Penstemon%baccharifolii%sect.%Pennell%%Pennell%Penstemon sect. Baccharifolii%Monogr. Acad. Nat. Sci. Philadelphia%1: 270%1935%%%%%%%tax. nov.
60470333-2%1.1.2.3%Scrophulariaceae%%N%Penstemon%bridgesiani%sect.%(Rydb.) Pennell%(Rydb.)%Pennell%Penstemon sect. Bridgesiani%Contr. U.S. Natl. Herb.%20(pt. 9): 327, 335%1920%%%Scrophulariaceae Penstemon [infragen.unranked] Bridgesiani Rydb.%%%%stat. nov.
60470334-2%1.1%Scrophulariaceae%%N%Penstemon%bridgesiani%[infragen.unranked]%Rydb.%%Rydb.%Penstemon [infragen.unranked] Bridgesiani%Fl. Colorado [Rydberg]%306, 308%1906%%%%%%%tax. nov.
60470335-2%1.1%Scrophulariaceae%%N%Penstemon%caespitosi%[infragen.unranked]%Rydb.%%Rydb.%Penstemon [infragen.unranked] Caespitosi%Fl. Colorado [Rydberg]%306, 307%1906%%%%%%%tax. nov.
60470336-2%1.1.2.1%Scrophulariaceae%%N%Penstemon%caespitosi%sect.%(Rydb.) Pennell%(Rydb.)%Pennell%Penstemon sect. Caespitosi%Contr. U.S. Natl. Herb.%20(pt. 9): 327, 334%1920%%%Scrophulariaceae Penstemon [infragen.unranked] Caespitosi Rydb.%%%%stat. nov.
60474753-2%1.1%Scrophulariaceae%%N%Penstemon%campanulati%[infragen.unranked]%G.Don%%G.Don%Penstemon [infragen.unranked] Campanulati%Gen. Hist.%4(1): 636%1837%%%%%%%tax. nov.
60470338-2%1.1%Scrophulariaceae%%N%Penstemon%chamaeleon%sect.%Crosswh.%%Crosswh.%Penstemon sect. Chamaeleon%Sida%2(4): 339%1966%%%%%%%tax. nov.
60470339-2%1.1.2.1%Scrophulariaceae%%N%Penstemon%coerulei%sect.%Pennell%%Pennell%Penstemon sect. Coerulei%Contr. U.S. Natl. Herb.%20(pt. 9): 326, 331%1920%%On p. 361, Pennell treated P.coeruleus Nutt. as a synonym of P. angustifolius Nutt.%%%%%tax. nov.
60470397-2%1.1%Scrophulariaceae%%N%Penstemon%cristati%[infragen.unranked]%Rydb.%%Rydb.%Penstemon [infragen.unranked] Cristati%Fl. Colorado [Rydberg]%306, 307%1906%%%%%%%tax. nov.
60470398-2%1.1.2.1%Scrophulariaceae%%N%Penstemon%cristati%sect.%(Rydb.) Pennell%(Rydb.)%Pennell%Penstemon sect. Cristati%Contr. U.S. Natl. Herb.%20(pt. 9): 325, 328%1920%%%Scrophulariaceae Penstemon [infragen.unranked] Cristati Rydb.%%%%stat. nov.
60474756-2%1.1%Scrophulariaceae%%N%Penstemon%cryptostemon%sect.%D.D.Keck%%D.D.Keck%Penstemon sect. Cryptostemon%Madroño%3(6): 248%1936%nom. inval.    Latin description/diagnosis lacking%%%%%%tax. nov.
60470323-2%1.1.2.2%Scrophulariaceae%%N%Penstemon%dasanthera%subgen.%(Raf.) Pennell%(Raf.)%Pennell%Penstemon subgen. Dasanthera%Contr. U.S. Natl. Herb.%20(9): 327, 593%1920%%On p. 327, Pennell did not mention any infrageneric rank for Dasanthera; on P. 593 (index), he listed Dasanthera as a subgenus of Penstemon and referred to p. 327.%Scrophulariaceae Dasanthera Raf.%%%%stat. nov.
60474759-2%1.1%Scrophulariaceae%%N%Penstemon%dissecti%[infragen.unranked]%Benth.%%Benth.%Penstemon [infragen.unranked] Dissecti%Prodr. [A. P. de Candolle]%10: 322%1846%%%%%%%tax. nov.
60474760-2%1.1%Scrophulariaceae%%N%Penstemon%dissecti%sect.%(Benth.) Pennell%(Benth.)%Pennell%Penstemon sect. Dissecti%Monogr. Acad. Nat. Sci. Philadelphia%1: 270%1935%%%Scrophulariaceae Penstemon [infragen.unranked] Dissecti Benth.%%%%stat. nov.
60474762-2%1.1%Scrophulariaceae%%N%Penstemon%elmigera%sect.%(Rchb. ex Spach) Benth.%(Rchb. ex Spach)%Benth.%Penstemon sect. Elmigera%Prodr. [A. P. de Candolle]%10: 322%1846%%%Scrophulariaceae Elmigera Rchb. ex Spach%%%%stat. nov.
60474751-2%1.1%Scrophulariaceae%%N%Penstemon%erianthera%sect.%G.Don%%G.Don%Penstemon sect. Erianthera%Gen. Hist.%4(1): 639%1837%%%%%%%tax. nov.
60474755-2%1.1%Scrophulariaceae%%N%Penstemon%gentianoides%sect.%G.Don%%G.Don%Penstemon sect. Gentianoides%Gen. Hist.%4(1): 640%1837%%%%%%%tax. nov.
60474763-2%1.1%Scrophulariaceae%%N%Penstemon%glabri%[infragen.unranked]%Rydb.%%Rydb.%Penstemon [infragen.unranked] Glabri%Fl. Colorado [Rydberg]%306%1906%%%%%%%tax. nov.
60474764-2%1.1%Scrophulariaceae%%N%Penstemon%glabri%sect.%(Rydb.) Pennell%(Rydb.)%Pennell%Penstemon sect. Glabri%Contr. U.S. Natl. Herb.%20(pt. 9): 326, 329%1920%%Reference to the basionym indirect%Scrophulariaceae Penstemon [infragen.unranked] Glabri Rydb.%%%%stat. nov.
60474754-2%1.1%Scrophulariaceae%%N%Penstemon%mexicani%[infragen.unranked]%G.Don%%G.Don%Penstemon [infragen.unranked] Mexicani%Gen. Hist.%4(1): 638%1837%%%%%%%tax. nov.
60474768-2%1.1.2.1%Scrophulariaceae%%N%Penstemon%peltanthera%sect.%D.D.Keck%%D.D.Keck%Penstemon sect. Peltanthera%Amer. Midl. Naturalist%18(5): 792, 795%1937%nom. illeg. nom. superfl.%In his P. sect. Peltanthera subsect. Spectabiles, Keck included P. palmeri A.Gray, the type species of P. sect. Spectabiles Penn.%%%%%nom. nov.
977970-1%1.1.2.1.1.2%Scrophulariaceae%%N%Penstemon%pennellianthus%sect.%(Crosswh.) T.Yamaz.%(Crosswh.)%T.Yamaz.%Penstemon sect. Pennellianthus%Fl. Jap. (Iwatsuki et al., eds.)%3a: 329%1993%%%Scrophulariaceae Pennellianthus Crosswh.%%%%comb. nov.
60474765-2%1.1%Scrophulariaceae%%N%Penstemon%petiolati%[infragen.unranked]%Rydb.%%Rydb.%Penstemon [infragen.unranked] Petiolati%Fl. Rocky Mts.%764 (-765)%1917%%%%%%%tax. nov.
60474766-2%1.1.2.1%Scrophulariaceae%%N%Penstemon%petiolati%sect.%(Rydb.) Pennell%(Rydb.)%Pennell%Penstemon sect. Petiolati%Contr. U.S. Natl. Herb.%20(pt. 9): 326, 328%1920%%%Scrophulariaceae Penstemon [infragen.unranked] Petiolati Rydb.%%%%stat. nov.
60474767-2%1.1.2.1%Scrophulariaceae%%N%Penstemon%spectabiles%sect.%Pennell%%Pennell%Penstemon sect. Spectabiles%Contr. U.S. Natl. Herb.%20(pt. 9): 326, 329%1920%%%%%%%tax. nov.
60474752-2%1.1%Scrophulariaceae%%N%Penstemon%veri%sect.%G.Don%%G.Don%Penstemon sect. Veri%Gen. Hist.%4(1): 636%1837%%The published epithet Verae is a nominative feminine plural adjective%%%%%tax. nov.
187116-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon abietinus%Contr. U.S. Natl. Herb.%20: 376%1920%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
1189284-2%1.1.2.1%Scrophulariaceae%%N%Penstemon%%spec.%M.E.Jones%%M.E.Jones%Penstemon aboriginium%%%%%P. calcareus M. E. Jones non Brandgeee%%%%%unknown
187117-2%1.1.2.1.1.1%Scrophulariaceae%%N%Penstemon%%spec.%M.E.Jones%%M.E.Jones%Penstemon aboriginum%Contr. W. Bot.%14: 35%1912%%%%%%%tax. nov.
904893-1%1.1.2.1.1.1.2.1.1.1%Scrophulariaceae%%N%Penstemon%%spec.%Evert%%Evert%Penstemon absarokensis%Madroño%31(3): 140%1984%%%%%%U.S.A. (Wyoming).%tax. nov.
187118-2%1.1.2.1.1.2%Scrophulariaceae%%N%Penstemon%%spec.%L.O.Williams%%L.O.Williams%Penstemon acaulis%Ann. Missouri Bot. Gard.%21: 345%1934%%%%%%Wyoming (Northwestern U.S.A., Northern America)%tax. nov.
282291-2%1.4%Scrophulariaceae%%N%Penstemon%%var.%(Penland) Neese%(Penland)%Neese%Penstemon acaulis var. yampaensis%Great Basin Naturalist%46: 459%1986%%%%%%%tax. nov.
30076629-2%1.1.2.2%Scrophulariaceae%%N%Penstemon%%spec.%Douglas ex Lindl.%%Douglas ex Lindl.%Penstemon acuminatus%Edwards's Bot. Reg.%15: t. 1285%1829%%%%%%United States of America (Northern America)%tax. nov.
807978-1%1.3.2.2.1.1.2.1%Scrophulariaceae%%N%Penstemon%%spec.%Douglas ex Lindl.%%Douglas ex Lindl.%Penstemon acuminatus%Edwards's Bot. Reg.%15: t. 1285%1829%%%%%%%tax. nov.
187119-2%1.1.2.1.1.1%Scrophulariaceae%%N%Penstemon%%var.%M.E.Jones%%M.E.Jones%Penstemon acuminatus var. congestus%Proc. Calif. Acad. Sci.%ser. 2, 5: 714%1895%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
187120-2%1.1.2.1.1.1%Scrophulariaceae%%N%Penstemon%%var.%M.E.Jones%%M.E.Jones%Penstemon acuminatus var. fendleri%Contr. W. Bot.%12: 61%1908%%%%%%%tax. nov.
187121-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%N.H.Holmgren%%N.H.Holmgren%Penstemon acuminatus var. latebracteatus%Brittonia%31: 232, fig%1979%%%%%%Oregon (Northwestern U.S.A., Northern America)%tax. nov.
891426-1%1.1.2.1.1.3%Scrophulariaceae%%N%Penstemon%%var.%N.H.Holmgren%%N.H.Holmgren%Penstemon acuminatus var. latibracteatus%Brittonia%31(2): 232%1979%%%%%%%unknown
187122-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%Hook.%%Hook.%Penstemon acuminatus var. minor%Fl. Bor.-Amer. (Hooker)%2(9): 97%1838%%%%%%Assiniboine & Red Rivers, Saskatchewan (Western Canada, Northern America)%tax. nov.
187123-2%1.3%Scrophulariaceae%%N%Penstemon%%f.%Cockerell%%Cockerell%Penstemon acuminatus f. roseus%Nat. Notes%2: 126%1891%%%%%%Colorado (Northwestern U.S.A., Northern America)%tax. nov.
187124-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Howell%%Howell%Penstemon adamsianus%Fl. N.W. Amer. [Howell]%1: 511%1901%%%%%%Washington (Northwestern U.S.A., Northern America)%tax. nov.
187125-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon aggregatus%Contr. U.S. Natl. Herb.%20: 367%1920%%%%%%Wyoming (Northwestern U.S.A., Northern America)%tax. nov.
187126-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Pennell & G.T.Nisbet%%Pennell & G.T.Nisbet%Penstemon alamosensis%Univ. Kansas Sci. Bull.%41 (5): 709%1960%%%%%%New Mexico (South-Central U.S.A., Northern America)%tax. nov.
187127-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon albertinus%Leafl. Bot. Observ. Crit.%1: 167%1906%%%%%%Alberta (Western Canada, Northern America)%tax. nov.
60431655-2%1.1.2.1.1.1%Scrophulariaceae%%N%Penstemon%%spec.%Nutt.%%Nutt.%Penstemon albidus%Gen. N. Amer. Pl. [Nuttall].%2: 53%1818%%%%%%United States of America (Northern America)%tax. nov.
187128-2%1.3.2.1%Scrophulariaceae%%N%Penstemon%%spec.%England%%England%Penstemon albifluvis%Great Basin Naturalist%42(3): 367%1982%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
187129-2%1.1.2.1.1.2%Scrophulariaceae%%N%Penstemon%%spec.%M.E.Jones%%M.E.Jones%Penstemon albomarginatus%Contr. W. Bot.%12: 61%1908%%%%%%Nevada, Arizona, United States of America (Northern America)%tax. nov.
187130-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon albrightii%Bot. Gaz.%65: 69%1918%%%%%%Idaho, Montana, United States of America (Northern America)%tax. nov.
187131-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Pennell in Small%%Pennell in Small%Penstemon alluviorum%Man. S.E. Fl. [Small]%1203%1933%%%%%%Mississippi to Arkansas, Missouri & Indiana, United States of America (Northern America)%tax. nov.
807986-1%1.1.2.1.1.2%Scrophulariaceae%%N%Penstemon%%spec.%Torr.%%Torr.%Penstemon alpinus%Ann. Lyceum Nat. Hist. New York%i. (1824) 35%%%%%%%%unknown
187133-2%1.3.2.1%Scrophulariaceae%%N%Penstemon%%subsp.%(Porter) Penland%(Porter)%Penland%Penstemon alpinus subsp. brandegeei%Man. Pl. Colorado%496, 641%1954%%%%%%%tax. nov.
187134-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(Pennell) Penland%(Pennell)%Penland%Penstemon alpinus subsp. magnus%Man. Pl. Colorado%496, 641%1954%%%%%%%tax. nov.
187135-2%1.4%Scrophulariaceae%%N%Penstemon%%f.%(A.Nelson) Pennell%(A.Nelson)%Pennell%Penstemon alpinus f. riparius%Contr. U.S. Natl. Herb.%20: 349%1920%%%%%%%tax. nov.
187136-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon alsinoides%Leafl. Bot. Observ. Crit.%1: 162%1906%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187137-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%G.N.Jones%%G.N.Jones%Penstemon amabilis%Res. Stud. State Coll. Wash.%2: 126, fig%1931%%%%%%Washington (Northwestern U.S.A., Northern America)%tax. nov.
807988-1%1.1.2.1.1.1.2.1.1.1%Scrophulariaceae%%N%Penstemon%%spec.%Torr.%%Torr.%Penstemon ambiguus%Ann. Lyceum Nat. Hist. New York%2(7): 228%1827%%%%%%%tax. nov.
187139-2%1.4.1.2%Scrophulariaceae%%N%Penstemon%%var.%Benth.%%Benth.%Penstemon ambiguus var. foliosus%Prodr. [A. P. de Candolle]%10: 321%1846%%%%%%Rocky Mts%tax. nov.
187140-2%1.4%Scrophulariaceae%%N%Penstemon%%var.%(D.D.Keck) N.H.Holmgren%(D.D.Keck)%N.H.Holmgren%Penstemon ambiguus var. laevissimus%Brittonia%31: 104%1979%%%%%%%tax. nov.
187141-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon ambiguus subsp. laevissimus%J. Wash. Acad. Sci.%29: 491%1939%%%%%%Nevada (Southwestern U.S.A., Northern America)%tax. nov.
187142-2%1.3.2.1%Scrophulariaceae%%N%Penstemon%%var.%(Torr.) A.Gray%(Torr.)%A.Gray%Penstemon ambiguus var. thurberi%Proc. Amer. Acad. Arts%6: 65%1862%%%Scrophulariaceae Penstemon thurberi Torr.%%%%comb. et stat. nov.
187143-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%N.H.Holmgren & L.M.Shultz%%N.H.Holmgren & L.M.Shultz%Penstemon ammophilus%Brittonia%34(4): 381, fig%1982%%%%%%Washington County (Utah, Southwestern U.S.A., Northern America)%tax. nov.
807989-1%1.1.2.1.1.1%Scrophulariaceae%%N%Penstemon%%spec.%Kunze%%Kunze%Penstemon amoenus%Hort. Lips. Sem.%(1840). Cf Linnaea, xvi. (1842) Litt. 107%%%%%%%%unknown
187144-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Crosswh.%%Crosswh.%Penstemon amphorellae%Amer. Midl. Naturalist%84: 241, fig. 2%1970%%%%%%Mexico (Northern America)%tax. nov.
807990-1%1.1.2.2.1.2%Scrophulariaceae%%N%Penstemon%%spec.%Moench%%Moench%Penstemon amplexicaulis%Methodus (Moench)%442%1794%%%%%%%unknown
807991-1%1.6%Scrophulariaceae%%N%Penstemon%%spec.%Buckley%%Buckley%Penstemon amplexicaulis%Proc. Acad. Nat. Sci. Philadelphia%1861 (1862) 461%%%%%%%%unknown
187145-2%1.2%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon amplus%Amer. J. Bot.%25: 115%1938%%%%%%Without locality%tax. nov.
807839-1%1.3%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon amplus%Amer. J. Bot.%1938, xxv. 1 15.%%%%%%%%unknown
187146-2%1.5%Scrophulariaceae%%N%Penstemon%%spec.%(I.M.Johnst.) Moran%(I.M.Johnst.)%Moran%Penstemon angelicus%Phytologia%45: 496%1980%%%%%%%tax. nov.
187147-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Eastw.%%Eastw.%Penstemon anguineus%Bull. Torrey Bot. Club%32: 208%1905%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
60431647-2%1.1%Scrophulariaceae%%N%Penstemon%%spec.%Nutt.%%Nutt.%Penstemon angustifolius%Cat. Pl. Upper Louisiana%[unpaged] no. 63%1813%nom. inval. nom. nud.%%%%%United States of America (Northern America)%tax. nov.
60431648-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Nutt. ex Pursh%%Nutt. ex Pursh%Penstemon angustifolius%Fl. Amer. Sept. (Pursh)%2: 738%1813%%%%%%United States of America (Northern America)%tax. nov.
807993-1%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Poir.%%Poir.%Penstemon angustifolius%Dict. Sci. Nat., ed. 2. [F. Cuvier]%38: 385%1825%%%%%%%unknown
807994-1%1.9%Scrophulariaceae%%N%Penstemon%%spec.%Fraser f. ex Pursh%%Fraser f. ex Pursh%Penstemon angustifolius%Fl. Amer. Sept. (Pursh)%2: 738%1813%%%%%%%unknown
187148-2%1.4%Scrophulariaceae%%N%Penstemon%%var.%Rydb.%%Rydb.%Penstemon angustifolius var. caudatus%Bull. Torrey Bot. Club%33: 151%1906%%%%%%%tax. nov.
187149-2%1.4%Scrophulariaceae%%N%Penstemon%%subsp.%(A.Heller) D.D.Keck%(A.Heller)%D.D.Keck%Penstemon angustifolius subsp. caudatus%J. Wash. Acad. Sci.%29: 490%1939%%%%%%%tax. nov.
282292-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%Neese%%Neese%Penstemon angustifolius var. dulcis%Great Basin Naturalist%46: 459%1986%%%%%%Millard County (Utah, Southwestern U.S.A., Northern America)%tax. nov.
187150-2%1.4%Scrophulariaceae%%N%Penstemon%%var.%(D.D.Keck) N.H.Holmgren%(D.D.Keck)%N.H.Holmgren%Penstemon angustifolius var. venosus%Brittonia%31: 104%1979%%%%%%%tax. nov.
187151-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon angustifolius subsp. venosus%J. Wash. Acad. Sci.%29: 490%1939%%%%%%%tax. nov.
187152-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%N.H.Holmgren%%N.H.Holmgren%Penstemon angustifolius var. vernalensis%Brittonia%31: 229 (-230), fig%1979%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
807995-1%1.7%Scrophulariaceae%%N%Penstemon%%spec.%Benth.%%Benth.%Penstemon antirrhinoides%Prodr. [A. P. de Candolle]%10: 594%1846%%%%%%%unknown
1020747-2%1.4.2.1.1.2%Scrophulariaceae%%N%Penstemon%%var.%(A.Gray) Munz & I.M.Johnst.%(A.Gray)%Munz & I.M.Johnst.%Penstemon antirrhinoides var. microphyllus%Bull. Torrey Bot. Club%49: 43%1922%%%Scrophulariaceae Penstemon microphyllus A.Gray%%%%comb. et stat. nov.
187154-2%1.4.2.1.1.1%Scrophulariaceae%%N%Penstemon%%subsp.%(A.Gray) D.D.Keck%(A.Gray)%D.D.Keck%Penstemon antirrhinoides subsp. microphyllus%Ill. Fl. Pacific States%3: 770%1951%%%Scrophulariaceae Penstemon microphyllus A.Gray%%%%comb. et stat. nov.
187156-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Straw%%Straw%Penstemon apateticus%Bol. Soc. Bot. México%no. 24: 42%1959%%%%%%Mexico (Northern America)%tax. nov.
187157-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%Straw%%Straw%Penstemon apateticus subsp. durangensis%Bol. Soc. Bot. México%no. 24: 43%1959%%%%%%Durango & Chihuahua, Mexico (Northern America)%tax. nov.
187158-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%Straw%%Straw%Penstemon apateticus subsp. townsendianus%Bol. Soc. Bot. México%24: 44%1959%%%%%%Mexico (Northern America)%tax. nov.
287925-2%1.3%Scrophulariaceae%%N%Penstemon%%f.%(A.Dietr.) Straw%(A.Dietr.)%Straw%Penstemon apateticus f. triphyllus%Bol. Soc. Bot. México%24: 44%1959%%%%%%Chihuahua (Mexico, Northern America)%tax. nov.
187159-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon arenarius%Pittonia%1(6): 282%1889%%%%%%Nevada (Southwestern U.S.A., Northern America)%tax. nov.
187160-2%1.5%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon arenicola%Bull. Torrey Bot. Club%25(5): 280%1898%%%%%%Wyoming (Northwestern U.S.A., Northern America)%tax. nov.
807998-1%1.5%Scrophulariaceae%%N%Penstemon%%spec.%Paxton%%Paxton%Penstemon argutus%Paxton's Mag. Bot.%6(72): 271%1840%%%%%%%unknown
187161-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Rydb.%%Rydb.%Penstemon aridus%Mem. New York Bot. Gard.%1: 348%1900%%%%%%Montana (Northwestern U.S.A., Northern America)%tax. nov.
187162-2%1.5%Scrophulariaceae%%N%Penstemon%%spec.%A.Heller%%A.Heller%Penstemon arizonicus%Bull. Torrey Bot. Club%26(11): 591%1899%%%%%%Arizona (Southwestern U.S.A., Northern America)%tax. nov.
187163-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon arkansanus%Proc. Acad. Nat. Sci. Philadelphia%73: 493%1922%%%%%%Arkansas (Southeastern U.S.A., Northern America)%tax. nov.
187164-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%Pennell%%Pennell%Penstemon arkansanus var. pubescens%Proc. Acad. Nat. Sci. Philadelphia%73: 494%1922%%%%%%Arkansas (Southeastern U.S.A., Northern America)%tax. nov.
187165-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%D.D.Keck%%D.D.Keck%Penstemon assurgens%Amer. Midl. Naturalist%23: 609%1940%%%%%%Idaho (Northwestern U.S.A., Northern America)%tax. nov.
808001-1%1.4%Scrophulariaceae%%N%Penstemon%%spec.%G.Don%%G.Don%Penstemon atropurpureus%Hort. Brit. [Loudon]%243%1830%%%%%%%unknown
808002-1%1.4.2.2.1.2%Scrophulariaceae%%N%Penstemon%%spec.%Douglas%%Douglas%Penstemon attenuatus%Edwards's Bot. Reg.%15: t. 1295%1830%%%%%%%unknown
187167-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%G.N.Jones%%G.N.Jones%Penstemon attenuatus var. glabratus%Res. Stud. State Coll. Wash.%2: 127%1931%%%%%%Idaho (Northwestern U.S.A., Northern America)%tax. nov.
187168-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%Pennell%%Pennell%Penstemon attenuatus subsp. hyacinthinus%Notul. Nat. Acad. Nat. Sci. Philadelphia%71: 8%1941%%%%%%Idaho, Washington & Oregon, United States of America (Northern America)%tax. nov.
187170-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(Pennell) M.Peck%(Pennell)%M.Peck%Penstemon attenuatus var. hyacinthinus%Man. Pl. Oregon%644%1941%%%%%%%tax. nov.
187171-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(Greene) D.D.Keck%(Greene)%D.D.Keck%Penstemon attenuatus subsp. militaris%Amer. Midl. Naturalist%33: 171%1945%%%%%%%tax. nov.
187172-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(Greene) Cronquist%(Greene)%Cronquist%Penstemon attenuatus var. militaris%Vasc. Pl. Pacif. N. W. [C.L. Hitchcock & al.]%4: 373%1959%%%%%%%tax. nov.
187169-2%1.2%Scrophulariaceae%%N%Penstemon%%f.%Pennell%%Pennell%Penstemon attenuatus f. multicolor%Notul. Nat. Acad. Nat. Sci. Philadelphia%71: 8%1941%%%%%%Idaho (Northwestern U.S.A., Northern America)%tax. nov.
187173-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(Pennell) D.D.Keck%(Pennell)%D.D.Keck%Penstemon attenuatus subsp. palustris%Amer. Midl. Naturalist%33: 171%1945%%%%%%%tax. nov.
187174-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(Pennell) Cronquist%(Pennell)%Cronquist%Penstemon attenuatus var. palustris%Vasc. Pl. Pacif. N. W. [C.L. Hitchcock & al.]%4: 373%1959%%%%%%%tax. nov.
187175-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(Rydb.) D.D.Keck%(Rydb.)%D.D.Keck%Penstemon attenuatus subsp. pseudoprocerus%Amer. Midl. Naturalist%33: 169%1945%%%%%%%tax. nov.
187176-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(Rydb.) Cronquist%(Rydb.)%Cronquist%Penstemon attenuatus var. pseudoprocerus%Vasc. Pl. Pacif. N. W. [C.L. Hitchcock & al.]%4: 373%1959%%%%%%%tax. nov.
187177-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon attenuatus subsp. typicus%Amer. Midl. Naturalist%33: 167%1945%%%%%%%tax. nov.
187178-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%A.Nelson%%A.Nelson%Penstemon attenuatus var. varians%Bot. Gaz.%54: 146%1912%%%%%%Idaho (Northwestern U.S.A., Northern America)%tax. nov.
187179-2%1.1.2.1.1.2%Scrophulariaceae%%N%Penstemon%%spec.%S.L.Welsh%%S.L.Welsh%Penstemon atwoodii%Great Basin Naturalist%35(4): 378%1976%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
187180-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon auriberbis%Contr. U.S. Natl. Herb.%20: 339%1920%%%%%%Colorado (Northwestern U.S.A., Northern America)%tax. nov.
187181-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon auricomus%Bull. Torrey Bot. Club%36: 688%1909%%%%%%%tax. nov.
187182-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Eastw.%%Eastw.%Penstemon austinii%Bull. Torrey Bot. Club%32: 206%1905%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187183-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Small%%Small%Penstemon australis%Fl. S.E. U.S. [Small].%1060, 1337%1903%%%%%%Florida (Southeastern U.S.A., Northern America)%tax. nov.
187184-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(Pennell) R.W.Benn.%(Pennell)%R.W.Benn.%Penstemon australis subsp. laxiflorus%Phytologia%9: 58%1963%%%%%%%tax. nov.
187185-2%1.1.2.1%Scrophulariaceae%%N%Penstemon%%f.%Fernald%%Fernald%Penstemon australis f. odontophyllus%Rhodora%51: 84%1949%%%%%%Virginia (Southeastern U.S.A., Northern America)%tax. nov.
808007-1%1.2.2.1.1.3%Scrophulariaceae%%N%Penstemon%%spec.%Benth.%%Benth.%Penstemon azureus%Pl. Hartw. [Bentham]%327%1849%%%%%%%unknown
187187-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%A.Gray%%A.Gray%Penstemon azureus var. ambiguus%Syn. Fl. N. Amer.%2(1): 272%1878%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187188-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon azureus subsp. angustissimus%Univ. Calif. Publ. Bot.%16: 402%1932%%%%%%%tax. nov.
187189-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%A.Gray%%A.Gray%Penstemon azureus var. angustissimus%Syn. Fl. N. Amer.%2(1): 272%1878%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187190-2%1.6%Scrophulariaceae%%N%Penstemon%%f.%(Hook.) Voss in Vilm.%(Hook.)%Voss in Vilm.%Penstemon azureus f. jaffrayanus%Vilm. Blumengärtn., ed. 3.%1: 769%1894%%%%%%%tax. nov.
187191-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon azureus subsp. parvulus%Univ. Calif. Publ. Bot.%16: 406%1932%%%%%%%tax. nov.
187192-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%A.Gray%%A.Gray%Penstemon azureus var. parvulus%Syn. Fl. N. Amer.%2(1): 272%1878%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187193-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon azureus subsp. typicus%Univ. Calif. Publ. Bot.%16: 402, fig. 14%1932%%%%%%%tax. nov.
30249411-2%1.1.2.1%Scrophulariaceae%%N%Penstemon%%spec.%Hook.%%Hook.%Penstemon baccharifolius%Bot. Mag.%78: t. 4627%1852%%%%%%Texas (South-Central U.S.A., Northern America)%tax. nov.
808008-1%1.5%Scrophulariaceae%%N%Penstemon%%spec.%Hook.%%Hook.%Penstemon baccharifolius%Bot. Mag.%78: t. 4627%1852%%%%%%%unknown
187194-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%Hemsl.%%Hemsl.%Penstemon baccharifolius var. schaffneri%Biol. Cent.-Amer., Bot.%6: 443%1882%%%%%%San Luis Potosi (Mexico, Northern America)%tax. nov.
187195-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon bakeri%Pittonia%4(25): 318%1901%%%%%%Colorado (Northwestern U.S.A., Northern America)%tax. nov.
808010-1%1.3%Scrophulariaceae%%N%Penstemon%%spec.%(Cav.) Roth%(Cav.)%Roth%Penstemon barbatus%Catal. Bot.%fasc. iii. 49; Nutt. Gen. Am. ii. 53%%%%Scrophulariaceae Chelone barbata Cav.%%%%comb. nov.
187196-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%Lindl.%%Lindl.%Penstemon barbatus var. carneus%Edwards's Bot. Reg.%25: tab. 21%1839%%%%%%Mexico (Northern America)%tax. nov.
187197-2%1.2.2.1.1.2%Scrophulariaceae%%N%Penstemon%%f.%(M.E.Jones) Pennell in C.V.Morton%(M.E.Jones)%Pennell in C.V.Morton%Penstemon barbatus f. flaviflorus%Contr. U.S. Natl. Herb.%29: 114%1945%%%%%%%tax. nov.
318345-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%A.Gray%%A.Gray%Penstemon barbatus var. labrosus%Bot. California [W.H.Brewer]%1: 622%1876%%[Gandhi 10 Aug 1999]%%%%Mount Pinos, south of Tejon, 7000 ft, California (Southwestern U.S.A., Northern America)%tax. nov.
187198-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%A.Gray%%A.Gray%Penstemon barbatus var. puberulus%Rep. U.S. Mex. Bound., Bot. [Emory]%114%1858%%As Pentstemon%%%%New Mexico (South-Central U.S.A., Northern America)%tax. nov.
187199-2%1.5%Scrophulariaceae%%N%Penstemon%%var.%(Benth. ex DC.) A.Gray%(Benth. ex DC.)%A.Gray%Penstemon barbatus var. torreyi%Proc. Amer. Acad. Arts%6: 59%1862%%%%%%%tax. nov.
187200-2%1.8%Scrophulariaceae%%N%Penstemon%%f.%(Benth. ex DC.) Voss in Vilm.%(Benth. ex DC.)%Voss in Vilm.%Penstemon barbatus f. torreyi%Vilm. Blumengärtn., ed. 3.%1: 766%1894%%%%%%%tax. nov.
187201-2%1.6%Scrophulariaceae%%N%Penstemon%%subsp.%(Benth.) D.D.Keck in Kearney & Peebles%(Benth.)%D.D.Keck in Kearney & Peebles%Penstemon barbatus subsp. torreyi%J. Wash. Acad. Sci.%29: 491%1939%%%%%%%tax. nov.
187202-2%1.5%Scrophulariaceae%%N%Penstemon%%subsp.%(A.Gray) D.D.Keck in Kearney & Peebles%(A.Gray)%D.D.Keck in Kearney & Peebles%Penstemon barbatus subsp. trichander%J. Wash. Acad. Sci.%29: 491%1939%%%%%%%tax. nov.
187203-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%A.Gray%%A.Gray%Penstemon barbatus var. trichander%Proc. Amer. Acad. Arts%11: 94%1876%%%%%%Colorado (Northwestern U.S.A., Northern America)%tax. nov.
187204-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%A.Gray%%A.Gray%Penstemon barbatus var. wislizeni%Proc. Amer. Acad. Arts%6: 59%1862%%%%%%Chihuahua (Mexico, Northern America)%tax. nov.
187205-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%N.H.Holmgren%%N.H.Holmgren%Penstemon barnebyi%Brittonia%31: 226, fig%1979%%%%%%Nevada (Southwestern U.S.A., Northern America)%tax. nov.
187206-2%1.2.2.1.1.1%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon barrettiae%Syn. Fl. N. Amer., ed.  2.%2(1): 440%1886%%%%%%Oregon (Northwestern U.S.A., Northern America)%tax. nov.
187207-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Eastw.%%Eastw.%Penstemon berryi%Bull. Torrey Bot. Club%32: 209%1905%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187208-2%1.5%Scrophulariaceae%%N%Penstemon%%spec.%(Brandegee) Clokey & D.D.Keck%(Brandegee)%Clokey & D.D.Keck%Penstemon bicolor%Bull. S. Calif. Acad. Sci.%38: 12%1939%%%%%%%tax. nov.
187209-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%Clokey & D.D.Keck%%Clokey & D.D.Keck%Penstemon bicolor subsp. roseus%Bull. S. Calif. Acad. Sci.%38: 12%1939%%%%%%Nevada & Arizona, United States of America (Northern America)%tax. nov.
187210-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%Clokey & D.D.Keck%%Clokey & D.D.Keck%Penstemon bicolor subsp. typicus%Bull. S. Calif. Acad. Sci.%38: 12%1939%%%%%%%tax. nov.
77140576-1%1.3%Scrophulariaceae%%N%Penstemon%%spec.%O'Kane & K.D.Heil%%O'Kane & K.D.Heil%Penstemon bleaklyi%Phytoneuron%2014-61: 1%2014%%Named for David L. Bleakly.%%%%New Mexico (South-Central U.S.A., Northern America)%tax. nov.
187211-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Straw%%Straw%Penstemon bolanius%Brittonia%15: 62%1963%%%%%%Jalisco (Mexico, Northern America)%tax. nov.
187212-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon brachyanthus%Notul. Nat. Acad. Nat. Sci. Philadelphia%no. 71: 3%1941%%%%%%Oregon (Northwestern U.S.A., Northern America)%tax. nov.
187213-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%D.D.Keck%%D.D.Keck%Penstemon bracteatus%Leafl. W. Bot.%1: 82%1934%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
1039493-2%1.3.2.1.1.1.2.1%Scrophulariaceae%%N%Penstemon%%spec.%Pursh%%Pursh%Penstemon bradburyi%Fl. Amer. Sept. (Pursh)%2: 738%1813%%Pursh cited P. grandiflorum. Fraser. catal. 1813 (invalid) as a synonym.%%%%United States of America (Northern America)%nom. nov.
187214-2%1.2.2.1.1.2%Scrophulariaceae%%N%Penstemon%%spec.%Porter%%Porter%Penstemon brandegeei%Mem. New York Bot. Gard.%1: 343%1900%%%%%%%tax. nov.
187215-2%1.5%Scrophulariaceae%%N%Penstemon%%spec.%(D.D.Keck) G.T.Nisbet & R.C.Jacks.%(D.D.Keck)%G.T.Nisbet & R.C.Jacks.%Penstemon breviculus%Univ. Kansas Sci. Bull.%41(5): 734%1960%%%%%%%tax. nov.
808015-1%1.1.2.1.1.2.2.2.1.1%Scrophulariaceae%%N%Penstemon%%spec.%Lindl.%%Lindl.%Penstemon breviflorus%Edwards's Bot. Reg.%23: t. 1946%1837%%%%%%%unknown
187217-2%1.5%Scrophulariaceae%%N%Penstemon%%var.%Schelle in Beissn., Schelle & Zabel%%Schelle in Beissn., Schelle & Zabel%Penstemon breviflorus var. canoso-barbatus%Handb. Laubholzben. [Beissner & al.]%432%1903%%%%%%%tax. nov.
187218-2%1.6%Scrophulariaceae%%N%Penstemon%%var.%(Kellogg) Schelle in Beissn., Schelle & Zabel%(Kellogg)%Schelle in Beissn., Schelle & Zabel%Penstemon breviflorus var. carinatus%Handb. Laubholzben. [Beissner & al.]%432%1903%%%%%%%tax. nov.
187219-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon breviflorus subsp. glabrisepalus%Madroño%3: 207%1936%%%%%%%tax. nov.
187220-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon breviflorus subsp. typicus%Madroño%3: 206%1936%%%%%%%tax. nov.
187221-2%1.6%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon brevifolius%New Man. Bot. Centr. Rocky Mt.%445%1909%%%%%%%tax. nov.
808017-1%1.4%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon brevilabris%Proc. Amer. Acad. Arts%xvii. (1881-82) 229%%%%%%%%unknown
187222-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon brevis%Bot. Gaz.%54: 417%1912%%%%%%Idaho (Northwestern U.S.A., Northern America)%tax. nov.
807851-1%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon brevisepalus%Man. S.E. Fl. [Small]%1204. 1933; et in Acad.Nat. Sc. Philad. Monogr.1, Scroph. 227. 1935, descr. ampl.%%%%%%%%unknown
187223-2%1.1.2.1%Scrophulariaceae%%N%Penstemon%%f.%Fernald%%Fernald%Penstemon brevisepalus f. heterolasius%Rhodora%51: 84%1949%%%%%%Open roadside bank west of Belltown, Nelson County (Kentucky, Southeastern U.S.A., Northern America)%tax. nov.
808019-1%1.4%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon bridgesii%Proc. Amer. Acad. Arts%vii. (1868) 379.%%%%%%%%unknown
187224-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%Monnet%%Monnet%Penstemon bridgesii var. amplexicaulis%Bull. Soc. Bot. France%61: 228%1915%%%%%%Nevada (Southwestern U.S.A., Northern America)%tax. nov.
187225-2%1.6%Scrophulariaceae%%N%Penstemon%%var.%(Kellogg) Schelle in Beissn., Schelle & Zabel%(Kellogg)%Schelle in Beissn., Schelle & Zabel%Penstemon bridgesii var. rostriflorus%Handb. Laubholzben. [Beissner & al.]%432%1903%%%%%%%tax. nov.
1010511-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Pennell in Small%%Pennell in Small%Penstemon brittonorum%%%%%%%%%%unknown
807852-1%1.6%Scrophulariaceae%%N%Penstemon%%spec.%Pennell ex Peattie%%Pennell ex Peattie%Penstemon brittonorum%J. Elisha Mitchell Sci. Soc.%xlv. 276 (1930); Pennell in Small, Man. Southeast. Fl. 1204 (1933)%%%%%%%%unknown
288139-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%D.D.Keck%%D.D.Keck%Penstemon × bryantae%Amer. Midl. Naturalist%18: 820%1937%%Penstemon palmeri X spectabilis%%%%%tax. nov.
291169-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon buckleyi%Proc. Acad. Nat. Sci. Philadelphia%73: 486%1922%%P. amplexicaulis Buckley non Moench%%%%%tax. nov.
291168-2%1.2.2.1.1.1%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon cacuminis%Notul. Nat. Acad. Nat. Sci. Philadelphia%71: 2%1941%%%%%%%nom. nov.
187226-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon caelestinus%Notul. Nat. Acad. Nat. Sci. Philadelphia%95: [1]%1942%%%%%%Montana (Northwestern U.S.A., Northern America)%tax. nov.
60431633-2%1.1%Scrophulariaceae%%N%Penstemon%%spec.%Nutt.%%Nutt.%Penstemon caeruleus%Gen. N. Amer. Pl. [Nuttall].%2: 52%1818%nom. illeg. nom. superfl.    for Penstemon angustifolius Nutt. ex Pursh (Dec 1813).%%%%%%nom. nov.
808020-1%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Nutt.%%Nutt.%Penstemon caeruleus%not%_stated%%%%%%%%unknown
808021-1%1.1.2.1.1.5%Scrophulariaceae%%N%Penstemon%%spec.%hort. ex E.Vilm.%%hort. ex E.Vilm.%Penstemon caeruleus%Fl. Pleine Terre (ed. 2)%651%1866%%%%%%%unknown
808022-1%1.4%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon caesius%Proc. Amer. Acad. Arts%xix. (1883) 92.%%%%%%%%unknown
323253-2%1.3.2.1.1.1%Scrophulariaceae%%N%Penstemon%%spec.%Nutt. ex A.Gray%%Nutt. ex A.Gray%Penstemon caespitosus%Proc. Amer. Acad. Arts%6: 66%1862%%%%%%United States of America (Northern America)%tax. nov.
1119656-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%A.Nelson%%A.Nelson%Penstemon caespitosus subsp. desertipicti%%%%%%%%%%unknown
187227-2%1.4%Scrophulariaceae%%N%Penstemon%%var.%(A.Nelson) N.H.Holmgren%(A.Nelson)%N.H.Holmgren%Penstemon caespitosus var. desertipicti%Brittonia%31: 104%1979%%%%%%%tax. nov.
187228-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(A.Nelson) D.D.Keck%(A.Nelson)%D.D.Keck%Penstemon caespitosus subsp. desertipicti%Bull. Torrey Bot. Club%64: 365%1937%%%%%%%tax. nov.
187229-2%1.4%Scrophulariaceae%%N%Penstemon%%var.%(Pennell) N.H.Holmgren%(Pennell)%N.H.Holmgren%Penstemon caespitosus var. perbrevis%Brittonia%31: 104%1979%%%%%%%tax. nov.
187230-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%Pennell%%Pennell%Penstemon caespitosus subsp. perbrevis%Contr. U.S. Natl. Herb.%20: 375%1920%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
187231-2%1.4%Scrophulariaceae%%N%Penstemon%%subsp.%(A.Gray) D.D.Keck%(A.Gray)%D.D.Keck%Penstemon caespitosus subsp. suffruticosus%Bull. Torrey Bot. Club%64: 365%1937%%%%%%%tax. nov.
290700-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%A.Gray%%A.Gray%Penstemon caespitosus var. suffruticosus%Syn. Fl. N. Amer.%2(1): 270%1878%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
187232-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(A.Gray) A.Nelson%(A.Gray)%A.Nelson%Penstemon caespitosus var. thompsoniae%Univ. Wyoming Publ.%3: 104%1937%%%%%%%tax. nov.
187233-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon caespitosus subsp. typicus%Bull. Torrey Bot. Club%64: 363%1937%%%%%%%tax. nov.
187234-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Brandegee%%Brandegee%Penstemon calcareus%Zoe%5: 152%1903%%%%%%California, Utah, United States of America (Northern America)%tax. nov.
290699-2%1.1.2.1.1.2%Scrophulariaceae%%N%Penstemon%%spec.%M.E.Jones%%M.E.Jones%Penstemon calcareus%Contr. W. Bot.%12: 60%1908%%%%%%Nevada (Southwestern U.S.A., Northern America)%tax. nov.
187235-2%1.5%Scrophulariaceae%%N%Penstemon%%spec.%(Munz & I.M.Johnst.) D.D.Keck%(Munz & I.M.Johnst.)%D.D.Keck%Penstemon californicus%Bull. Torrey Bot. Club%64: 378%1937%%%%%%%tax. nov.
187236-2%1.5%Scrophulariaceae%%N%Penstemon%%spec.%Small%%Small%Penstemon calycosus%Bull. Torrey Bot. Club%25(9): 470%1898%%%%%%Tennessee & Louisiana, United States of America (Northern America)%tax. nov.
808027-1%1.1.2.1.1.2%Scrophulariaceae%%N%Penstemon%%spec.%Willd.%%Willd.%Penstemon campanulatus%Sp. Pl., ed. 4 [Willdenow]%3(1): 228%1800%%%%%%%unknown
187237-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%Loes.%%Loes.%Penstemon campanulatus var. angustiflorus%Bull. Herb. Boissier%2: 562%1894%%%%%%Mexico (Northern America)%tax. nov.
187238-2%1.4%Scrophulariaceae%%N%Penstemon%%var.%(Kunth) Hook.%(Kunth)%Hook.%Penstemon campanulatus var. angustifolius%Bot. Mag.%68: t. 3884%1841%%%%%%%tax. nov.
187239-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%Straw%%Straw%Penstemon campanulatus subsp. chihuahuensis%Brittonia%15: 59%1963%%%%%%Chihuahua, Durango, Sonora, Mexico (Northern America)%tax. nov.
77106965-1%1.2%Scrophulariaceae%%N%Penstemon%%var.%(Straw) B.L.Turner%(Straw)%B.L.Turner%Penstemon campanulatus var. chihuahuensis%Phytoneuron%2010-31: 2%2010%%%Scrophulariaceae Penstemon campanulatus  subsp. chihuahuensis Straw%%%%stat. nov.
187240-2%1.6%Scrophulariaceae%%N%Penstemon%%f.%(Lindl.) Voss in Vilm.%(Lindl.)%Voss in Vilm.%Penstemon campanulatus f. pulchellus%Vilm. Blumengärtn., ed. 3.%1: 768%1894%%%%%%%tax. nov.
187241-2%1.1.2.1.1.4%Scrophulariaceae%%N%Penstemon%%f.%(G.Don) Voss in Vilm.%(G.Don)%Voss in Vilm.%Penstemon campanulatus f. roseus%Vilm. Blumengärtn., ed. 3.%1: 768%1894%%%%%%%tax. nov.
187242-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(S.S.White) Straw%(S.S.White)%Straw%Penstemon campanulatus subsp. subglandulosus%Brittonia%15: 58%1963%%%%%%%tax. nov.
187243-2%1.4%Scrophulariaceae%%N%Penstemon%%var.%S.S.White%%S.S.White%Penstemon campanulatus var. subglandulosus%J. Arnold Arbor.%28: 440%1947%%%%%%Sonora (Mexico, Northern America)%tax. nov.
187244-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Britton%%Britton%Penstemon canescens%Mem. Torrey Bot. Club%5: 291%1894%%%%%%%tax. nov.
187245-2%1.1.2.1.1.2%Scrophulariaceae%%N%Penstemon%%f.%(Pennell ex Small) Fernald%(Pennell ex Small)%Fernald%Penstemon canescens f. brittonorum%Rhodora%51: 84%1949%%%%%%%tax. nov.
187246-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%Pennell%%Pennell%Penstemon canescens subsp. brittonorum%Monogr.  Acad.  Nat.  Sci.  Philadelphia%1: 222%1935%%%%%%%tax. nov.
187247-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%Pennell%%Pennell%Penstemon canescens subsp. typicus%Monogr.  Acad.  Nat.  Sci.  Philadelphia%1: 221%1935%%%%%%%tax. nov.
187248-2%1.1.2.1%Scrophulariaceae%%N%Penstemon%%f.%Fernald%%Fernald%Penstemon canescens f. villicaulis%Rhodora%51: 83%1949%%%%%%Virginia (Southeastern U.S.A., Northern America)%tax. nov.
187249-2%1.3.2.1.1.1%Scrophulariaceae%%N%Penstemon%%spec.%Kellogg%%Kellogg%Penstemon canosobarbatus%Hutchings' Ill. Calif. Mag.%5(3): 102, fig.%1860%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187250-2%1.5%Scrophulariaceae%%N%Penstemon%%spec.%Wooton & Standl.%%Wooton & Standl.%Penstemon cardinalis%Contr. U.S. Natl. Herb.%16: 171%1913%%%%%%New Mexico (South-Central U.S.A., Northern America)%tax. nov.
187251-2%1.5%Scrophulariaceae%%N%Penstemon%%subsp.%(A.Nelson) G.T.Nisbet & R.C.Jacks.%(A.Nelson)%G.T.Nisbet & R.C.Jacks.%Penstemon cardinalis subsp. regalis%Univ. Kansas Sci. Bull.%41(5): 707%1960%%%%%%%tax. nov.
77162263-1%1.3%Scrophulariaceae%%N%Penstemon%%var.%(A.Nelson) C.C.Freeman%(A.Nelson)%C.C.Freeman%Penstemon cardinalis var. regalis%PhytoKeys%80: 34%2017%%doi:10.3897/phytokeys.80.12962%Scrophulariaceae Penstemon regalis A.Nelson%%%%stat. nov.
187252-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Howell%%Howell%Penstemon cardwellii%Fl. N.W. Amer. [Howell]%1: 510%1901%%%%%%Oregon (Northwestern U.S.A., Northern America)%tax. nov.
187253-2%1.2.2.1.1.2%Scrophulariaceae%%N%Penstemon%%spec.%Kellogg%%Kellogg%Penstemon carinatus%Proc. Calif. Acad. Sci.%1: 62%1855%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187254-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Pennell ex E.H.Graham%%Pennell ex E.H.Graham%Penstemon carnosus%Ann. Carnegie Mus.%26: 329%1937%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
187255-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon caryi%Contr. U.S. Natl. Herb.%20: 354%1920%%%%%%Wyoming (Northwestern U.S.A., Northern America)%tax. nov.
187256-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%A.Heller%%A.Heller%Penstemon caudatus%Minnesota Bot. Stud.%2: 34%1898%%%%%%New Mexico (South-Central U.S.A., Northern America)%tax. nov.
187257-2%1.2%Scrophulariaceae%%N%Penstemon%%spec.%Krautter%%Krautter%Penstemon cedrosensis%Contr. Bot. Lab. Morris Arbor. Univ. Pennsylvania%3: 129%1908%%%%%%%tax. nov.
808035-1%1.6%Scrophulariaceae%%N%Penstemon%%spec.%S.Watson%%S.Watson%Penstemon centranthifolius%Botany [Fortieth Parallel]%219%1871%%%%%%%unknown
808036-1%1.4%Scrophulariaceae%%N%Penstemon%%spec.%(Benth.) Benth.%(Benth.)%Benth.%Penstemon centranthifolius%Scroph. Ind.%7%1835%%%Scrophulariaceae Chelone centranthifolia Benth.%%%%comb. nov.
187258-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon cephalanthus%Notul. Nat. Acad. Nat. Sci. Philadelphia%95: 3%1942%%%%%%Montana (Northwestern U.S.A., Northern America)%tax. nov.
312126-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon cephalophorus%Leafl. Bot. Observ. Crit.%1: 79%1904%%%%%%Tulare County (California, Southwestern U.S.A., Northern America)%tax. nov.
187260-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Kellogg%%Kellogg%Penstemon cerrosensis%Proc. Calif. Acad. Sci.%2: 19%1863%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187261-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%L.%%L.%Penstemon chelonoides%Pl. Surin.%6%1775%%%%%%Northern South America (Southern America)%tax. nov.
187262-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Greene ex C.F.Baker%%Greene ex C.F.Baker%Penstemon chionophilus%West Amer. Pl.%[1]: 18%1902%%%%%%Nevada (Southwestern U.S.A., Northern America)%tax. nov.
808039-1%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon chionophilus%Leaflets Bot. Obs.%i. 161 (1906).%%%%%%%%unknown
187263-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Greene ex C.F.Baker%%Greene ex C.F.Baker%Penstemon cinerascens%West Amer. Pl.%[1]: 18%1902%%%%%%Nevada (Southwestern U.S.A., Northern America)%tax. nov.
808040-1%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon cinerascens%Leaflets Bot. Obs.%i. 161 (1906)%%%%%%%%unknown
187264-2%1.1.2.1.1.2%Scrophulariaceae%%N%Penstemon%%spec.%Piper%%Piper%Penstemon cinereus%Contr. U.S. Natl. Herb.%16: 209%1913%%%%%%Oregon (Northwestern U.S.A., Northern America)%tax. nov.
187265-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon cinereus subsp. foliatus%Amer. Midl. Naturalist%33: 188%1945%%%%%%Washington, Oregon & Idaho, United States of America (Northern America)%tax. nov.
187266-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon cinereus subsp. typicus%Amer. Midl. Naturalist%33: 188%1945%%%%%%%tax. nov.
807860-1%1.2%Scrophulariaceae%%N%Penstemon%%spec.%Keck%%Keck%Penstemon cinicola%Amer. Midl. Naturalist%xxii. 297 (1939), anglice; et in Publ. Carnegie Inst. Wash.No. 520 (J. Clausen, Keck & Hiesey, Exper. Stud. Nat. Spec. I.) 265, 294 (1940),latine.%%%%%%%%unknown
282294-2%1.1.2.1.1.1%Scrophulariaceae%%N%Penstemon%%spec.%M.E.Jones%%M.E.Jones%Penstemon cleburnei%Contr. W. Bot.%12: 62%1908%%%%%%Wyoming (Northwestern U.S.A., Northern America)%tax. nov.
187267-2%1.1.2.1.1.2%Scrophulariaceae%%N%Penstemon%%spec.%M.E.Jones%%M.E.Jones%Penstemon cleburni%Contr. W. Bot.%12: 62%1908%%%%%%Wyoming (Northwestern U.S.A., Northern America)%tax. nov.
808043-1%1.5%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon clevelandii%Proc. Amer. Acad. Arts%11: 94%1876%%%%%%%unknown
187268-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(I.M.Johnst.) D.D.Keck%(I.M.Johnst.)%D.D.Keck%Penstemon clevelandii subsp. angelicus%Amer. Midl. Naturalist%18: 811%1937%%%%%%%tax. nov.
187269-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%I.M.Johnst.%%I.M.Johnst.%Penstemon clevelandii var. angelicus%Proc. Calif. Acad. Sci.%ser. 4, 12: 1165%1924%%%%%%Mexico (Northern America)%tax. nov.
187270-2%1.4%Scrophulariaceae%%N%Penstemon%%subsp.%(Munz & I.M.Johnst.) D.D.Keck%(Munz & I.M.Johnst.)%D.D.Keck%Penstemon clevelandii subsp. connatus%Amer. Midl. Naturalist%18: 811%1937%%%%%%%tax. nov.
187271-2%1.4%Scrophulariaceae%%N%Penstemon%%var.%Munz & I.M.Johnst.%%Munz & I.M.Johnst.%Penstemon clevelandii var. connatus%Bull. Torrey Bot. Club%49: 357%1923%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187272-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon clevelandii subsp. mohavensis%Amer. Midl. Naturalist%18: 810%1937%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187273-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(D.D.Keck) McMinn%(D.D.Keck)%McMinn%Penstemon clevelandii var. mohavensis%Man. Calif. Shrubs%511%1939%%%%%%%tax. nov.
187274-2%1.6%Scrophulariaceae%%N%Penstemon%%var.%Munz & I.M.Johnst.%%Munz & I.M.Johnst.%Penstemon clevelandii var. stephensii%Bull. Torrey Bot. Club%49: 41%1922%%%%%%%tax. nov.
187275-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon clevelandii subsp. typicus%Amer. Midl. Naturalist%18: 810%1937%%%%%%%tax. nov.
187276-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon clutei%Amer. Bot. (Binghamton)%33: 109%1927%%%%%%Arizona (Southwestern U.S.A., Northern America)%tax. nov.
808044-1%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Nutt.%%Nutt.%Penstemon cobaea%Trans. Amer. Philos. Soc.%ser. 2, 5: 182%1835%%%%%%%unknown
187277-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%Pennell%%Pennell%Penstemon cobaea subsp. purpureus%Monogr.  Acad.  Nat.  Sci.  Philadelphia%1: 250%1935%%%%%%%tax. nov.
187278-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%Pennell%%Pennell%Penstemon cobaea var. purpureus%Proc. Acad. Nat. Sci. Philadelphia%73: 490%1922%%%%%%Arkansas (Southeastern U.S.A., Northern America)%tax. nov.
187279-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%Pennell%%Pennell%Penstemon cobaea subsp. typicus%Monogr.  Acad.  Nat.  Sci.  Philadelphia%1: 249%1935%%%%%%%tax. nov.
187280-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Rydb.%%Rydb.%Penstemon coccinatus%Bull. Torrey Bot. Club%36: 691%1909%%%%%%Arizona & Utah, United States of America (Northern America)%tax. nov.
808046-1%1.5%Scrophulariaceae%%N%Penstemon%%spec.%Engelm.%%Engelm.%Penstemon coccineus%in Wisliz. Tour North Mexico%107 (Sketch, 23)%%%%%%%%unknown
808047-1%1.1.2.1.1.2%Scrophulariaceae%%N%Penstemon%%spec.%Hoffmanns.%%Hoffmanns.%Penstemon coccineus%cf. Linnaea%16(Lit.): 281%1842%%%%%%%unknown
187281-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%A.Gray%%A.Gray%Penstemon coccineus var. filifolius%Proc. Amer. Acad. Arts%21: 402%1886%%%%%%Mexico (Northern America)%tax. nov.
808048-1%1.1.2.1.1.1%Scrophulariaceae%%N%Penstemon%%spec.%Torr.%%Torr.%Penstemon coeruleus%Ann. Lyceum Nat. Hist. New York%ii. (1828) 220%%%%%%%%unknown
808049-1%1.1.2.1.1.2%Scrophulariaceae%%N%Penstemon%%spec.%Nutt.%%Nutt.%Penstemon coeruleus%Gen. N. Amer. Pl. [Nuttall].%2: 52%1818%%%%%%%unknown
187282-2%1.5%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon collinus%Bull. Torrey Bot. Club%25(5): 279%1898%%%%%%Wyoming (Northwestern U.S.A., Northern America)%tax. nov.
187283-2%1.5%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon coloradoensis%Bull. Torrey Bot. Club%26(7): 355%1899%%%%%%Wyoming (Northwestern U.S.A., Northern America)%tax. nov.
187284-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(Pennell) A.Nelson%(Pennell)%A.Nelson%Penstemon coloradoensis var. glabrescens%Univ. Wyoming Publ.%3: 105%1937%%%%%%%tax. nov.
187285-2%1.4%Scrophulariaceae%%N%Penstemon%%subsp.%Pennell%%Pennell%Penstemon coloradoensis subsp. sileri%Contr. U.S. Natl. Herb.%20: 363%1920%%%%%%%tax. nov.
928113-1%1.3%Scrophulariaceae%%N%Penstemon%%spec.%C.Huber%%C.Huber%Penstemon colvillii%Cat. Graines 1868 [Huber]%5%1868%%%%%%U.S.A. (California).%tax. nov.
808052-1%1.4%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon comarrhenus%Proc. Amer. Acad. Arts%xii. (1877) 81%%%%%%%%unknown
187286-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%(D.D.Keck) Crosswh.%(D.D.Keck)%Crosswh.%Penstemon compactus%Amer. Midl. Naturalist%77: 6%1967%%%%%%%tax. nov.
187287-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%D.D.Keck%%D.D.Keck%Penstemon concinnus%Amer. Midl. Naturalist%23: 608%1940%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
808053-1%1.3.2.2.1.1%Scrophulariaceae%%N%Penstemon%%spec.%Douglas%%Douglas%Penstemon confertus%Edwards's Bot. Reg.%15: t. 1260%1829%%%%%%%unknown
187288-2%1.1.2.1.1.1%Scrophulariaceae%%N%Penstemon%%var.%M.E.Jones%%M.E.Jones%Penstemon confertus var. aberrans%Proc. Calif. Acad. Sci.%ser. 2, 5: 715%1895%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
187289-2%1.1.2.1.1.2%Scrophulariaceae%%N%Penstemon%%var.%M.E.Jones%%M.E.Jones%Penstemon confertus var. attenuatus%Contr. W. Bot.%12: 62%1908%%%%%%%tax. nov.
187290-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%A.Gray%%A.Gray%Penstemon confertus var. caeruleo-purpureus%Proc. Amer. Acad. Arts%6: 72%1862%%%%%%Saskatchewan to Oregon & British Columbia%tax. nov.
187291-2%1.2.2.1.1.1%Scrophulariaceae%%N%Penstemon%%var.%(Greene) Jeps.%(Greene)%Jeps.%Penstemon confertus var. geniculatus%Man. Fl. Pl. Calif. [Jepson]%914%1925%%%%%%%tax. nov.
187292-2%1.1.2.1.1.1%Scrophulariaceae%%N%Penstemon%%var.%Piper%%Piper%Penstemon confertus var. globosus%Bull. Torrey Bot. Club%27: 397%1900%%%%%%Oregon (Northwestern U.S.A., Northern America)%tax. nov.
187293-2%1.2.2.1%Scrophulariaceae%%N%Penstemon%%var.%(Greene) Jeps.%(Greene)%Jeps.%Penstemon confertus var. modestus%Man. Fl. Pl. Calif. [Jepson]%914%1925%%%%%%%tax. nov.
187294-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%Hook.%%Hook.%Penstemon confertus var. nanus%Hooker's J. Bot. Kew Gard. Misc.%3: 300%1851%%%%%%%tax. nov.
187295-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%Trautv.%%Trautv.%Penstemon confertus var. ochroleucus%Bull. Sci. Acad. Imp. Sci. Saint-Pétersbourg%5: 344%1839%%%%%%Western North America%tax. nov.
187296-2%1.5%Scrophulariaceae%%N%Penstemon%%var.%(Douglas ex Graham) Coville%(Douglas ex Graham)%Coville%Penstemon confertus var. procerus%Contr. U.S. Natl. Herb.%4: 169%1893%%%%%%%tax. nov.
187297-2%1.1.2.1%Scrophulariaceae%%N%Penstemon%%var.%Jeps.%%Jeps.%Penstemon confertus var. rigidus%Man. Fl. Pl. Calif. [Jepson]%914%1925%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187298-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%Trautv.%%Trautv.%Penstemon confertus var. violaceus%Bull. Sci. Acad. Imp. Sci. Saint-Pétersbourg%5: 344%1839%%%%%%Western North America%tax. nov.
187299-2%1.1.2.1%Scrophulariaceae%%N%Penstemon%%spec.%M.E.Jones%%M.E.Jones%Penstemon confusus%Zoe%4: 280%1893%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
187300-2%1.1.2.1.1.1%Scrophulariaceae%%N%Penstemon%%subsp.%(M.E.Jones) D.D.Keck%(M.E.Jones)%D.D.Keck%Penstemon confusus subsp. patens%Amer. Midl. Naturalist%18: 827%1937%%%%%%%tax. nov.
187301-2%1.1.2.1.1.1%Scrophulariaceae%%N%Penstemon%%var.%M.E.Jones%%M.E.Jones%Penstemon confusus var. patens%Contr. W. Bot.%12: 63%1908%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187302-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon confusus subsp. typicus%Amer. Midl. Naturalist%18: 827%1937%%%%%%%tax. nov.
187303-2%1.2.2.1.1.1%Scrophulariaceae%%N%Penstemon%%spec.%(M.E.Jones) Pennell%(M.E.Jones)%Pennell%Penstemon congestus%Ann. Carnegie Mus.%26: 331%1937%%%%%%%tax. nov.
187304-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon connatifolius%Amer. J. Bot.%18: 437%1931%%%%%%Arizona (Southwestern U.S.A., Northern America)%tax. nov.
808054-1%1.3.2.2%Scrophulariaceae%%N%Penstemon%%spec.%Deppe ex Walp.%%Deppe ex Walp.%Penstemon connatus%Allg. Gartenzeitung (Otto & Dietrich)%12(no. 35): 276%1844%%%%%%%tax. nov.
808055-1%1.1.2.1.1.3.1.2%Scrophulariaceae%%N%Penstemon%%spec.%M.Martens & Galeotti%%M.Martens & Galeotti%Penstemon cordatus%Bull. Acad. Roy. Sci. Bruxelles%xii. II. 17%1845%%%%%%%unknown
808056-1%1.1.5.1.1.2%Scrophulariaceae%%N%Penstemon%%spec.%Walp.%%Walp.%Penstemon cordatus%Repert. Bot. Syst. (Walpers)%iii. 249%%%%%%%%unknown
808057-1%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Benth.%%Benth.%Penstemon cordifolius%Scroph. Ind. Introd.%7.%%%%%%%%unknown
808058-1%1.7%Scrophulariaceae%%N%Penstemon%%spec.%Benth.%%Benth.%Penstemon corymbosus%Prodr. [A. P. de Candolle]%10: 593%1846%%%%%%%unknown
187307-2%1.1.2.2%Scrophulariaceae%%N%Penstemon%%var.%Jeps.%%Jeps.%Penstemon corymbosus var. puberulentus%Man. Fl. Pl. Calif. [Jepson]%909%1925%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187308-2%1.5%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon crandallii%Bull. Torrey Bot. Club%26(7): 354%1899%%%%%%Wyoming (Northwestern U.S.A., Northern America)%tax. nov.
187309-2%1.4%Scrophulariaceae%%N%Penstemon%%var.%(D.D.Keck) N.H.Holmgren%(D.D.Keck)%N.H.Holmgren%Penstemon crandallii var. atratus%Brittonia%31: 105%1979%%%%%%%tax. nov.
187310-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon crandallii subsp. atratus%Bull. Torrey Bot. Club%64: 370%1937%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
187311-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(Pennell) D.D.Keck%(Pennell)%D.D.Keck%Penstemon crandallii subsp. glabrescens%Bull. Torrey Bot. Club%64: 369%1937%%%%%%%tax. nov.
77175259-1%1.1%Scrophulariaceae%%N%Penstemon%%var.%(Pennell) C.C.Freeman%(Pennell)%C.C.Freeman%Penstemon crandallii var. glabrescens%J. Bot. Res. Inst. Texas%11(2): 287%2017%%%Scrophulariaceae Penstemon glabrescens Pennell%%%%comb. nov.
187313-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(Greene) D.D.Keck%(Greene)%D.D.Keck%Penstemon crandallii subsp. procumbens%Bull. Torrey Bot. Club%64: 369%1937%%%%%%%tax. nov.
77162264-1%1.3%Scrophulariaceae%%N%Penstemon%%var.%(Greene) C.C.Freeman%(Greene)%C.C.Freeman%Penstemon crandallii var. procumbens%PhytoKeys%80: 34%2017%%doi:10.3897/phytokeys.80.12962%Scrophulariaceae Penstemon procumbens Greene%%%%stat. nov.
77162265-1%1.3%Scrophulariaceae%%N%Penstemon%%var.%(A.Nelson) C.C.Freeman%(A.Nelson)%C.C.Freeman%Penstemon crandallii var. ramaleyi%PhytoKeys%80: 35%2017%%doi:10.3897/phytokeys.80.12962%Scrophulariaceae Penstemon ramaleyi A.Nelson%%%%comb. et stat. nov.
1113825-2%1.6%Scrophulariaceae%%N%Penstemon%%subsp.%(D.D.Keck) Kartesz & Gandhi%(D.D.Keck)%Kartesz & Gandhi%Penstemon crandallii subsp. taosensis%Phytologia%72: 89%1992%%%%%%%unknown
187312-2%1.5%Scrophulariaceae%%N%Penstemon%%var.%(D.D.Keck) G.T.Nisbet & R.C.Jacks.%(D.D.Keck)%G.T.Nisbet & R.C.Jacks.%Penstemon crandallii var. taosensis%Univ. Kansas Sci. Bull.%41(5): 726%1960%%%%%%%tax. nov.
187314-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon crandallii subsp. typicus%Bull. Torrey Bot. Club%64: 368%1937%%%%%%%tax. nov.
808060-1%1.1.2.2.1.3%Scrophulariaceae%%N%Penstemon%%spec.%Lindl.%%Lindl.%Penstemon crassifolius%Edwards's Bot. Reg.%24: t. 16%1838%%%%%%%unknown
808061-1%1.1.2.1.1.6%Scrophulariaceae%%N%Penstemon%%spec.%Shuttlew. ex Benth.%%Shuttlew. ex Benth.%Penstemon crassifolius%Prodr. [A. P. de Candolle]%10: 327%1846%%%%%%%unknown
187316-2%1.5%Scrophulariaceae%%N%Penstemon%%spec.%Wooton & Standl.%%Wooton & Standl.%Penstemon crassulus%Contr. U.S. Natl. Herb.%16: 172%1913%%%%%%New Mexico (South-Central U.S.A., Northern America)%tax. nov.
187317-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon crideri%Amer. J. Bot.%23: 270%1936%%%%%%Arizona (Southwestern U.S.A., Northern America)%tax. nov.
60431643-2%1.1.2.2%Scrophulariaceae%%N%Penstemon%%spec.%Nutt.%%Nutt.%Penstemon cristatus%Gen. N. Amer. Pl. [Nuttall].%2: 52%1818%sp. nov. for Penstemon eriantherus Nutt. ex Pursh (Dec 1813) p.p.%%%%%United States of America (Northern America)%tax. nov.
60431646-2%1.1%Scrophulariaceae%%N%Penstemon%%spec.%Nutt.%%Nutt.%Penstemon cristatus%Cat. Pl. Upper Louisiana%[unpaged] no. 65%1813%nom. inval. nom. nud.%%%%%United States of America (Northern America)%tax. nov.
808063-1%1.1.2.1.1.3%Scrophulariaceae%%N%Penstemon%%spec.%Fraser f. ex Nutt.%%Fraser f. ex Nutt.%Penstemon cristatus%Gen. N. Amer. Pl. [Nuttall].%2: 52%1818%%Cites 'Fras. Catal. 1813' = Cat. Pl. Upper Louisiana%%%%%unknown
77201815-1%1.1%Scrophulariaceae%%N%Penstemon%%spec.%(D.D.Keck) N.H.Holmgren%(D.D.Keck)%N.H.Holmgren%Penstemon curtiflorus%Brittonia%70(1): 126, figs. 6, 7k-o%2017%%doi:10.1007/s12228-017-9498-9%Scrophulariaceae Penstemon richardsonii  subsp. curtiflorus D.D.Keck%%%%comb. et stat. nov.
808064-1%1.4%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon cusickii%Proc. Amer. Acad. Arts%xvi. (1881) 106.%%%%%%%%unknown
808065-1%1.6%Scrophulariaceae%%N%Penstemon%%spec.%Hook.%%Hook.%Penstemon cyananthus%Bot. Mag.%75: t. 4464%1849%%%%%%%unknown
282295-2%1.3.2.1.1.2%Scrophulariaceae%%N%Penstemon%%var.%Porter in Porter & J.M.Coult.%%Porter in Porter & J.M.Coult.%Penstemon cyananthus var. brandegeei%Syn. Fl. Colorado%91%1874%%%%%%Colorado (Northwestern U.S.A., Northern America)%tax. nov.
187320-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon cyananthus subsp. compactus%Amer. Midl. Naturalist%23: 615%1940%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
60437379-2%1.1%Scrophulariaceae%%N%Penstemon%%var.%N.D.Atwood%%N.D.Atwood%Penstemon cyananthus var. judyae%Utah Fl., ed. 3.%622%2003%%varietal name honors: Judy Vaughn Atwood (wife of N. D. Atwood).%%%%Utah County (Utah, Southwestern U.S.A., Northern America)%tax. nov.
187321-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%Pennell%%Pennell%Penstemon cyananthus subsp. longiflorus%Contr. U.S. Natl. Herb.%20(9): 353%1920%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
187322-2%1.4%Scrophulariaceae%%N%Penstemon%%var.%(A.Gray) N.H.Holmgren%(A.Gray)%N.H.Holmgren%Penstemon cyananthus var. subglaber%Brittonia%31: 105%1979%%%%%%%tax. nov.
187323-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%Pennell%%Pennell%Penstemon cyananthus var. subglaber%Contr. U.S. Natl. Herb.%20: 352%1920%%%%%%%tax. nov.
1170617-2%1.5%Scrophulariaceae%%N%Penstemon%%var.%(Gray) N.H.Holmgren%(Gray)%N.H.Holmgren%Penstemon cyanathus var. subglaber%%%%%%%%%%unknown
187324-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon cyaneus%Contr. U.S. Natl. Herb.%20: 351%1920%%%%%%Wyoming, Idaho, United States of America (Northern America)%tax. nov.
187325-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Payson%%Payson%Penstemon cyanocaulis%Bot. Gaz.%60: 380%1915%%%%%%Colorado (Northwestern U.S.A., Northern America)%tax. nov.
187326-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Rydb.%%Rydb.%Penstemon cyathophorus%Bull. Torrey Bot. Club%31: 643%1905%%%%%%Colorado (Northwestern U.S.A., Northern America)%tax. nov.
1001596-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(Gray) Pennell%(Gray)%Pennell%Penstemon cynanthus subsp. subglaber%%%%%%%%%%unknown
808069-1%1.5%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon dasyphyllus%Rep. U.S. Mex. Bound., Bot. [Emory]%112.%%%%%%%%unknown
187328-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon davidsonii%Pittonia%2(11): 241%1892%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187329-2%1.4%Scrophulariaceae%%N%Penstemon%%var.%(J.M.Coult. & Fisher) B.Boivin%(J.M.Coult. & Fisher)%B.Boivin%Penstemon davidsonii var. ellipticus%Naturaliste Canad.%93: 1062%1967%%%%%%%tax. nov.
187330-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon davidsonii subsp. menziesii%Brittonia%8: 247%1957%%%%%%Idaho (Northwestern U.S.A., Northern America)%tax. nov.
187331-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(D.D.Keck) Cronquist%(D.D.Keck)%Cronquist%Penstemon davidsonii var. menziesii%Vasc. Pl. Pacif. N. W. [C.L. Hitchcock & al.]%4: 379%1959%%%%%%%tax. nov.
187332-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%Cronquist%%Cronquist%Penstemon davidsonii var. praeteritus%Leafl. W. Bot.%10: 129%1964%%%%%%Nevada & Oregon, United States of America (Northern America)%tax. nov.
187333-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Howell%%Howell%Penstemon dayanus%Fl. N.W. Amer. [Howell]%1: 511%1901%%%%%%Oregon (Northwestern U.S.A., Northern America)%tax. nov.
187334-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon deamii%Monogr.  Acad.  Nat.  Sci.  Philadelphia%no. 1: 212%1935%%%%%%Indiana & Illinois, United States of America (Northern America)%tax. nov.
187335-2%1.2%Scrophulariaceae%%N%Penstemon%%spec.%Crosswh.%%Crosswh.%Penstemon deaveri%Amer. Midl. Naturalist%77: 6%1967%%%%%%%tax. nov.
282296-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%O'Kane & J.L.Anderson%%O'Kane & J.L.Anderson%Penstemon debilis%Brittonia%39: 412 (-414), fig%1987%%%%%%Colorado (Northwestern U.S.A., Northern America)%tax. nov.
187336-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Pennell ex Crosswh.%%Pennell ex Crosswh.%Penstemon decurvus%Leafl. W. Bot.%10: 172%1965%%%%%%Nevada (Southwestern U.S.A., Northern America)%tax. nov.
187337-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Crosswh.%%Crosswh.%Penstemon degeneri%Amer. Midl. Naturalist%74: 434%1965%%%%%%Colorado (Northwestern U.S.A., Northern America)%tax. nov.
187338-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon depressus%Leafl. Bot. Observ. Crit.%1: 162%1906%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187339-2%1.1.2.1.1.1%Scrophulariaceae%%N%Penstemon%%spec.%Piper%%Piper%Penstemon deserticola%Proc. Biol. Soc. Washington%32: 43%1919%%%%%%Oregon (Northwestern U.S.A., Northern America)%tax. nov.
187340-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon desertipicti%Univ. Wyoming Publ. Sci., Bot.%1: 130%1926%%%%%%Arizona (Southwestern U.S.A., Northern America)%tax. nov.
187341-2%1.1.2.1.1.2%Scrophulariaceae%%N%Penstemon%%spec.%M.E.Jones%%M.E.Jones%Penstemon desertorum%Contr. W. Bot.%12: 59%1908%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
808075-1%1.3.2.3.1.1%Scrophulariaceae%%N%Penstemon%%spec.%Douglas ex Lindl.%%Douglas ex Lindl.%Penstemon deustus%Edwards's Bot. Reg.%16: t. 1318%1830%%%%%%%tax. nov.
187342-2%1.2.2.1.1.1%Scrophulariaceae%%N%Penstemon%%var.%(Greene) Jeps.%(Greene)%Jeps.%Penstemon deustus var. arenarius%Man. Fl. Pl. Calif. [Jepson]%916%1925%%%%%%%tax. nov.
187343-2%1.5.2.1%Scrophulariaceae%%N%Penstemon%%subsp.%(Torr. & A.Gray) Pennell & D.D.Keck%(Torr. & A.Gray)%Pennell & D.D.Keck%Penstemon deustus subsp. heterander%Amer. Midl. Naturalist%23(3): 603%1940%%%Scrophulariaceae Penstemon heterander Torr. & A.Gray%%%%comb. et stat. nov.
187344-2%1.4.2.1%Scrophulariaceae%%N%Penstemon%%var.%(Torr. & A.Gray) M.Peck%(Torr. & A.Gray)%M.Peck%Penstemon deustus var. heterander%Man. Pl. Oregon%642%1941%%%Scrophulariaceae Penstemon heterander Torr. & A.Gray%%%%comb. et stat. nov.
187345-2%1.1.2.1%Scrophulariaceae%%N%Penstemon%%var.%M.E.Jones%%M.E.Jones%Penstemon deustus var. pedicellatus%Zoe%4: 281%1893%%%%%%Nevada (Southwestern U.S.A., Northern America)%tax. nov.
187346-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%L.F.Hend.%%L.F.Hend.%Penstemon deustus var. savagei%Rhodora%33: 206%1931%%%%%%Oregon (Northwestern U.S.A., Northern America)%tax. nov.
187347-2%1.2.2.1.1.1%Scrophulariaceae%%N%Penstemon%%subsp.%(M.E.Jones) Pennell & D.D.Keck%(M.E.Jones)%Pennell & D.D.Keck%Penstemon deustus subsp. sudans%Amer. Midl. Naturalist%23: 600%1940%%%%%%%tax. nov.
187348-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%L.F.Hend.%%L.F.Hend.%Penstemon deustus var. suffrutescens%Rhodora%33: 206%1931%%%%%%Oregon (Northwestern U.S.A., Northern America)%tax. nov.
187349-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon deustus subsp. typicus%Amer. Midl. Naturalist%23: 600%1940%%%%%%%tax. nov.
187350-2%1.4%Scrophulariaceae%%N%Penstemon%%subsp.%(Suksd.) Pennell & D.D.Keck%(Suksd.)%Pennell & D.D.Keck%Penstemon deustus subsp. variabilis%Amer. Midl. Naturalist%23: 602%1940%%%%%%%tax. nov.
187351-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(Suksd.) Cronquist%(Suksd.)%Cronquist%Penstemon deustus var. variabilis%Vasc. Pl. Pacif. N. W. [C.L. Hitchcock & al.]%4: 380%1959%%%%%%%tax. nov.
808076-1%1.3.2.1.1.1%Scrophulariaceae%%N%Penstemon%%spec.%Douglas%%Douglas%Penstemon diffusus%Bot. Reg.%14: t. 1132%1828%%%%%%%unknown
187352-2%1.2%Scrophulariaceae%%N%Penstemon%%f.%Hardin%%Hardin%Penstemon diffusus f. albiflorus%Mazama%11: 89%1929%%%%%%Washington (Northwestern U.S.A., Northern America)%tax. nov.
187353-2%1.3.2.1%Scrophulariaceae%%N%Penstemon%%spec.%Nutt. ex Sims%%Nutt. ex Sims%Penstemon digitalis%Bot. Mag.%52: t. 2587%1825%%%%%%United States of America (Northern America)%tax. nov.
808077-1%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Nutt.%%Nutt.%Penstemon digitalis%Trans. Amer. Philos. Soc.%ser. 2, 5: 181%1835%%%%%%%unknown
187354-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%Trautv.%%Trautv.%Penstemon digitalis var. albidus%Bull. Sci. Acad. Imp. Sci. Saint-Pétersbourg%5: 345%1839%%%%%%Without definite locality%tax. nov.
187355-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(Douglas) Trautv.%(Douglas)%Trautv.%Penstemon digitalis var. attenuatus%Bull. Sci. Acad. Imp. Sci. Saint-Pétersbourg%5: 345%1839%%%%%%%tax. nov.
187356-2%1.2%Scrophulariaceae%%N%Penstemon%%f.%Steyerm.%%Steyerm.%Penstemon digitalis f. baueri%Rhodora%43: 663%1941%%%%%%Missouri (North-Central U.S.A., Northern America)%tax. nov.
187357-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(Graham) Trautv.%(Graham)%Trautv.%Penstemon digitalis var. glaucus%Bull. Sci. Acad. Imp. Sci. Saint-Pétersbourg%5: 345%1839%%%%%%%tax. nov.
187358-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(Nutt.) Trautv.%(Nutt.)%Trautv.%Penstemon digitalis var. gracilis%Bull. Sci. Acad. Imp. Sci. Saint-Pétersbourg%5: 345%1839%%%%%%%tax. nov.
1076986-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(Aiton) Trautv.%(Aiton)%Trautv.%Penstemon digitalis var. laevigatus%%%%%%%%%%unknown
1092932-2%1.4.2.1%Scrophulariaceae%%N%Penstemon%%var.%(Benth.) Chapm.%(Benth.)%Chapm.%Penstemon digitalis var. multiflorus%Fl. South. U.S.%290%1860%%%Scrophulariaceae Penstemon pubescens Aiton var. multiflorus Benth.%%%%comb. nov.
187359-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(Aiton) Trautv.%(Aiton)%Trautv.%Penstemon digitalis var. pubescens%Bull. Sci. Acad. Imp. Sci. Saint-Pétersbourg%5: 345%1839%%%%%%%tax. nov.
187360-2%1.2.1.3%Scrophulariaceae%%N%Penstemon%%spec.%Kuntze%%Kuntze%Penstemon dimorphus%Revis. Gen. Pl.%2: 463%1891%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187361-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Rydb.%%Rydb.%Penstemon diphyllus%Mem. New York Bot. Gard.%1: 349%1900%%%%%%Montana (Northwestern U.S.A., Northern America)%tax. nov.
187362-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%D.D.Keck%%D.D.Keck%Penstemon discolor%Bull. Torrey Bot. Club%64: 379%1937%%%%%%Arizona (Southwestern U.S.A., Northern America)%tax. nov.
808080-1%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Elliott%%Elliott%Penstemon dissectus%Sketch Bot. S. Carolina [Elliott]%2: 129%1822%%%%%%%unknown
187363-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%N.H.Holmgren%%N.H.Holmgren%Penstemon distans%Brittonia%32: 326, fig%1980%%%%%%Arizona (Southwestern U.S.A., Northern America)%tax. nov.
187364-2%1.1.2.1.1.2%Scrophulariaceae%%N%Penstemon%%spec.%M.E.Jones%%M.E.Jones%Penstemon divergens%Contr. W. Bot.%12: 64%1908%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187365-2%1.1.2.2.1.2%Scrophulariaceae%%N%Penstemon%%spec.%M.E.Jones ex Pennell%%M.E.Jones ex Pennell%Penstemon dolius%Contr. U.S. Natl. Herb.%20(9): 341%1920%%%%%%Nevada (Southwestern U.S.A., Northern America)%tax. nov.
282298-2%1.4%Scrophulariaceae%%N%Penstemon%%var.%N.H.Holmgren%%N.H.Holmgren%Penstemon dolius var. duchesnensis%Brittonia%31: 219 (-220), fig%1979%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
808083-1%1.1.2.2.1.3%Scrophulariaceae%%N%Penstemon%%spec.%Hook.%%Hook.%Penstemon douglasii%Fl. Bor.-Amer. (Hooker)%2(9): 98%1838%%%%%%%unknown
187368-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Davidson%%Davidson%Penstemon dubius%Bull. S. Calif. Acad. Sci.%28: 6, pl. 3%1929%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
282297-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%(N.H.Holmgren) Neese%(N.H.Holmgren)%Neese%Penstemon duchesnensis%Great Basin Naturalist%46: 459%1986%%%%%%%tax. nov.
77210561-1%1.1%Scrophulariaceae%%N%Penstemon%%spec.%Pérez-Calix & Zacarías%%Pérez-Calix & Zacarías%Penstemon dugesii%Phytotaxa%447(3): 210%2020%%doi:10.11646/phytotaxa.447.3.7 The name honours Alfred Auguste Dalsescantz Dugès (1826–1910), French doctor and zoologist who lived and worked for more than 50 years in the city of Guanajuato and founded a herbarium in the city of Guanajuato, of which the surviving part is to be found in the Alfredo Dugès Museum at the University of Guanajuato.%%%%Guanajuato (Mexico Northeast, Mexico, Northern America)%tax. nov.
187369-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%A.Heller%%A.Heller%Penstemon eastwoodiae%Muhlenbergia%1: 4%1900%%%%%%%tax. nov.
30182808-2%1.1.2.2.1.1%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon eatonii%Proc. Amer. Acad. Arts%8: 395%1872%%specific epithet spelled as eatoni%%%%United States of America (Northern America)%tax. nov.
187370-2%1.5%Scrophulariaceae%%N%Penstemon%%subsp.%(A.Nelson) D.D.Keck in Kearney & Peebles%(A.Nelson)%D.D.Keck in Kearney & Peebles%Penstemon eatonii subsp. exsertus%J. Wash. Acad. Sci.%29: 491%1939%%%%%%%tax. nov.
77162266-1%1.3%Scrophulariaceae%%N%Penstemon%%var.%(A.Nelson) C.C.Freeman%(A.Nelson)%C.C.Freeman%Penstemon eatonii var. exsertus%PhytoKeys%80: 35%2017%%doi:10.3897/phytokeys.80.12962%Scrophulariaceae Penstemon exsertus A.Nelson%%%%stat. nov.
187371-2%1.1.2.1.1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(M.E.Jones) D.D.Keck in Kearney & Peebles%(M.E.Jones)%D.D.Keck in Kearney & Peebles%Penstemon eatonii subsp. undosus%J. Wash. Acad. Sci.%29: 491%1939%%%%%%%tax. nov.
187372-2%1.1.2.1.1.1%Scrophulariaceae%%N%Penstemon%%var.%M.E.Jones%%M.E.Jones%Penstemon eatonii var. undosus%Proc. Calif. Acad. Sci.%ser. 2, 5: 715%1895%%%%%%Arizona, Colorado & Utah, United States of America (Northern America)%tax. nov.
807875-1%1.1.2.1.1.2%Scrophulariaceae%%N%Penstemon%%spec.%hort. ex English%%hort. ex English%Penstemon × edithae%Natl. Hort. Mag.%xxvi. 108 (1947), hybr. artef.%%%%%%%%unknown
808086-1%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Poir.%%Poir.%Penstemon elegans%Dict. Sci. Nat., ed. 2. [F. Cuvier]%38: 384%1825%%%%%%%unknown
187373-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon elegantulus%Notul. Nat. Acad. Nat. Sci. Philadelphia%71: 14%1941%%%%%%Oregon (Northwestern U.S.A., Northern America)%tax. nov.
187374-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%J.M.Coult. & Fisher%%J.M.Coult. & Fisher%Penstemon ellipticus%Bot. Gaz.%18: 302%1893%%%%%%Idaho (Northwestern U.S.A., Northern America)%tax. nov.
290698-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon ellipticus%Leafl. Bot. Observ. Crit.%1: 167%1906%%%%%%Washington (Northwestern U.S.A., Northern America)%tax. nov.
60431645-2%1.1%Scrophulariaceae%%N%Penstemon%%spec.%Nutt.%%Nutt.%Penstemon eriantherus%Cat. Pl. Upper Louisiana%[unpaged] no. 67%1813%nom. inval. nom. nud.%%%%%United States of America (Northern America)%tax. nov.
60431649-2%1.1.2.2%Scrophulariaceae%%N%Penstemon%%spec.%Nutt.%%Nutt.%Penstemon eriantherus%Gen. N. Amer. Pl. [Nuttall].%2: 52%1814%nom. illeg.    nom. superfl. for P. glaber Pursh (Dec 1813); later homonym (non P. eriantherus Nutt. ex Pursh Dec 1813)%%%%%%nom. nov.
60431651-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Nutt. ex Pursh%%Nutt. ex Pursh%Penstemon eriantherus%Fl. Amer. Sept. (Pursh)%2: 737-738%1813%%%%%%United States of America (Northern America)%tax. nov.
808089-1%1.1.2.1.1.4%Scrophulariaceae%%N%Penstemon%%spec.%Fraser f.%%Fraser f.%Penstemon eriantherus%Gen. N. Amer. Pl. [Nuttall].%2: 52%1818%%Cites 'Far. Catal.' [1813] = Cat. Pl. Upper Louisiana%%%%%unknown
187375-2%1.1.2.1.1.1%Scrophulariaceae%%N%Penstemon%%var.%M.E.Jones%%M.E.Jones%Penstemon eriantherus var. argillosus%Contr. W. Bot.%12: 62%1908%%%%%%Oregon (Northwestern U.S.A., Northern America)%tax. nov.
282299-2%1.1.2.1.1.3%Scrophulariaceae%%N%Penstemon%%var.%(M.E.Jones) Dorn%(M.E.Jones)%Dorn%Penstemon eriantherus var. cleburnei%Vasc. Pl. Wyoming%300%1988%%%%%%%tax. nov.
187376-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%Pennell & D.D.Keck%%Pennell & D.D.Keck%Penstemon eriantherus var. grandis%Bull. Torrey Bot. Club%65: 251%1938%%%%%%Montana (Northwestern U.S.A., Northern America)%tax. nov.
187377-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%Pennell & D.D.Keck%%Pennell & D.D.Keck%Penstemon eriantherus var. redactus%Bull. Torrey Bot. Club%65: 252%1938%%%%%%Montana (Northwestern U.S.A., Northern America)%tax. nov.
187378-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%Pennell%%Pennell%Penstemon eriantherus var. saliens%Contr. U.S. Natl. Herb.%20: 343%1920%%%%%%%tax. nov.
187379-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%A.Nelson%%A.Nelson%Penstemon eriantherus var. whitedii%Bot. Gaz.%54: 148%1912%%%%%%%tax. nov.
187380-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Rydb.%%Rydb.%Penstemon erosus%Bull. Torrey Bot. Club%28: 28%1901%%%%%%Colorado (Northwestern U.S.A., Northern America)%tax. nov.
187381-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%English%%English%Penstemon euglaucus%Proc. Biol. Soc. Washington%41: 197%1928%%%%%%Oregon (Northwestern U.S.A., Northern America)%tax. nov.
187382-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon exilifolius%Bull. Torrey Bot. Club%28: 230%1901%%%%%%Wyoming (Northwestern U.S.A., Northern America)%tax. nov.
187383-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%A.Nelson%%A.Nelson%Penstemon exilifolius var. desertus%Bull. Torrey Bot. Club%28: 231%1901%%%%%%Wyoming (Northwestern U.S.A., Northern America)%tax. nov.
187384-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%D.D.Keck%%D.D.Keck%Penstemon eximius%Amer. Midl. Naturalist%18: 798%1937%%%%%%Baja California Norte (Mexico, Northern America)%tax. nov.
187385-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon exsertus%Amer. J. Bot.%18: 438%1931%%%%%%Arizona (Southwestern U.S.A., Northern America)%tax. nov.
187386-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon fasciculatus%Proc. Amer. Acad. Arts%21: 403%1886%%%%%%Mexico (Northern America)%tax. nov.
187387-2%1.5%Scrophulariaceae%%N%Penstemon%%spec.%Torr. & A.Gray%%Torr. & A.Gray%Penstemon fendleri%Pacific Railr. Rep. 2, Pt. 4, Bot. (Pope)%168%1857%%%%%%United States of America (Northern America)%tax. nov.
808095-1%1.1.2.1.1.6%Scrophulariaceae%%N%Penstemon%%spec.%Nutt. ex Benth.%%Nutt. ex Benth.%Penstemon filifolius%Prodr. [A. P. de Candolle]%10: 322%1846%%%%%%%unknown
187388-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%(D.D.Keck) D.D.Keck in Abrams%(D.D.Keck)%D.D.Keck in Abrams%Penstemon filiformis%Ill. Fl. Pacific States%3: 761%1951%%%%%%%tax. nov.
187389-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Straw%%Straw%Penstemon filisepalis%Bol. Soc. Bot. México%no. 27: 14%1962%%%%%%Chihuahua (Mexico, Northern America)%tax. nov.
187390-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon flavescens%Notul. Nat. Acad. Nat. Sci. Philadelphia%95: 4%1942%%%%%%Idaho & Montana, United States of America (Northern America)%tax. nov.
187391-2%1.1.2.1.1.2%Scrophulariaceae%%N%Penstemon%%spec.%M.E.Jones%%M.E.Jones%Penstemon flaviflorus%Contr. W. Bot.%12: 66%1908%%%%%%Western United States, United States of America (Northern America)%tax. nov.
282300-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Danley%%Danley%Penstemon floribundus%Brittonia%37: 321, fig%1985%%%%%%Nevada (Southwestern U.S.A., Northern America)%tax. nov.
187392-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Brandegee%%Brandegee%Penstemon floridus%Bot. Gaz.%27: 454%1899%%%%%%Nevada (Southwestern U.S.A., Northern America)%tax. nov.
187393-2%1.4%Scrophulariaceae%%N%Penstemon%%var.%(Eastw.) N.H.Holmgren%(Eastw.)%N.H.Holmgren%Penstemon floridus var. austinii%Brittonia%31: 105%1979%%%%%%%tax. nov.
187394-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(Eastw.) D.D.Keck%(Eastw.)%D.D.Keck%Penstemon floridus subsp. austinii%Amer. Midl. Naturalist%18: 803%1937%%%%%%%tax. nov.
187395-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon floridus subsp. typicus%Amer. Midl. Naturalist%18: 803%1937%%%%%%%tax. nov.
187396-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Neese & S.L.Welsh%%Neese & S.L.Welsh%Penstemon flowersii%Great Basin Naturalist%43: 429, fig%1983%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
1074987-2%1.2.2.2.1.1%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon formosus%Proc. Biol. Soc. Washington%17: 100%1904%nom. illeg. later homonym    non (J.Thomps.) Trautv. (1839).%%%%%%nom. nov.
60456604-2%1.1%Scrophulariaceae%%N%Penstemon%%spec.%(J.Thomps.) Trautv.%(J.Thomps.)%Trautv.%Penstemon formosus%Bull. Sci. Acad. Imp. Sci. Saint-Pétersbourg%5(22): 346%1839%%Reference to the basionym indirect.%Scrophulariaceae Chelone formosa J.Thomps.%%%%comb. nov.
282301-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Crosswh.%%Crosswh.%Penstemon francisci-pennellii%Leafl. W. Bot.%10: 170%1965%%%%%%Nevada (Southwestern U.S.A., Northern America)%tax. nov.
300268-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%S.L.Welsh%%S.L.Welsh%Penstemon franklinii%Rhodora%95: 414-415        fig%1993%%%%%%north end of Cedar Valley, Iron County (Utah, Southwestern U.S.A., Northern America)%tax. nov.
808099-1%1.7%Scrophulariaceae%%N%Penstemon%%spec.%Torr. & A.Gray%%Torr. & A.Gray%Penstemon fremontii%Proc. Amer. Acad. Arts%vi. (1862) 60.%%%%%%%%unknown
808100-1%1.7%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon fremontii%Bot. California [W.H.Brewer]%i. 622%1876%%%%%%%unknown
282302-2%1.4%Scrophulariaceae%%N%Penstemon%%var.%Dorn & Lichvar%%Dorn & Lichvar%Penstemon fremontii var. glabrescens%Madroño%37: 195, fig. 1%1990%%%%%%Colorado (Northwestern U.S.A., Northern America)%tax. nov.
187399-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%A.Gray ex S.Watson%%A.Gray ex S.Watson%Penstemon fremontii var. parryi%Botany [Fortieth Parallel]%218%1871%%%%%%Colorado & Nevada, United States of America (Northern America)%tax. nov.
290697-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%A.Gray%%A.Gray%Penstemon fremontii var. subglaber%Syn. Fl. N. Amer.%2(1): 262%1878%%%%%%Idaho (Northwestern U.S.A., Northern America)%tax. nov.
808101-1%1.5%Scrophulariaceae%%N%Penstemon%%spec.%Lamb.%%Lamb.%Penstemon frutescens%Trans. Linn. Soc. London%10(2): 259, t. 6%1811%%%%%%%unknown
187400-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Coville%%Coville%Penstemon fruticiformis%Contr. U.S. Natl. Herb.%4: 170%1893%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
310033-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon fruticiformis subsp. amargosae%Amer. Midl. Naturalist%18: 801%1937%%%%%%Nye County (Nevada, Southwestern U.S.A., Northern America)%tax. nov.
970358-1%1.1.2.1.1.6%Scrophulariaceae%%N%Penstemon%%var.%(D.D.Keck) N.H.Holmgren%(D.D.Keck)%N.H.Holmgren%Penstemon fruticiformis var. amargosae%Brittonia%44(4): 481%1992%%%Scrophulariaceae Penstemon fruticiformis  subsp. amargosae%%%%comb. nov.
187402-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%Munz & I.M.Johnst.%%Munz & I.M.Johnst.%Penstemon fruticiformis var. incertus%Bull. S. Calif. Acad. Sci.%23: 33%1924%%%%%%%tax. nov.
187403-2%1.1.2.1%Scrophulariaceae%%N%Penstemon%%var.%Jeps.%%Jeps.%Penstemon fruticiformis var. spiciformis%Man. Fl. Pl. Calif. [Jepson]%912%1925%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187404-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon fruticiformis subsp. typicus%Amer. Midl. Naturalist%18: 801%1937%%%%%%%tax. nov.
187405-2%1.5%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon fruticosus%Pittonia%2(11): 239%1892%%%%%%%tax. nov.
187406-2%1.1.5.1.1.1%Scrophulariaceae%%N%Penstemon%%subsp.%Piper%%Piper%Penstemon fruticosus subsp. cardwellii%Contr. U.S. Natl. Herb.%11: 499%1906%%%%%%%tax. nov.
187407-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%Krautter%%Krautter%Penstemon fruticosus var. crassifolius%Contr. Bot. Lab. Morris Arbor. Univ. Pennsylvania%3: 100%1908%%%%%%%tax. nov.
187408-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(Hook.) C.K.Schneid.%(Hook.)%C.K.Schneid.%Penstemon fruticosus var. douglasii%Ill. Handb. Laubholzk. [C.K.Schneider]%2: 615%1911%%%%%%%tax. nov.
187409-2%1.6.2.1.1.1%Scrophulariaceae%%N%Penstemon%%subsp.%(Lindl.) Pennell & D.D.Keck%(Lindl.)%Pennell & D.D.Keck%Penstemon fruticosus subsp. scouleri%Ill. Fl. Pacific States%3: 765%1951%%%Scrophulariaceae Penstemon scouleri Lindl.%%%%comb. et stat. nov.
187410-2%1.3.2.1%Scrophulariaceae%%N%Penstemon%%var.%(Lindl.) Cronquist%(Lindl.)%Cronquist%Penstemon fruticosus var. scouleri%Vasc. Pl. Pacif. N. W. [C.L. Hitchcock & al.]%4: 385%1959%%%Scrophulariaceae Penstemon scouleri Lindl.%%%%comb. et stat. nov.
187411-2%1.4%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck in Abrams%%D.D.Keck in Abrams%Penstemon fruticosus subsp. serratus%Ill. Fl. Pacific States%3: 765%1951%%%%%%Washington, Oregon & Idaho, United States of America (Northern America)%tax. nov.
187412-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(D.D.Keck) Cronquist%(D.D.Keck)%Cronquist%Penstemon fruticosus var. serratus%Vasc. Pl. Pacif. N. W. [C.L. Hitchcock & al.]%4: 385%1959%%%%%%%tax. nov.
808104-1%1.1.2.2.1.2%Scrophulariaceae%%N%Penstemon%%spec.%Hook.%%Hook.%Penstemon gairdneri%Fl. Bor.-Amer. (Hooker)%2(9): 99%1838%%%%%%%unknown
187413-2%1.1.2.1.1.1%Scrophulariaceae%%N%Penstemon%%subsp.%(Piper) D.D.Keck%(Piper)%D.D.Keck%Penstemon gairdneri subsp. hians%Amer. Midl. Naturalist%23: 597%1940%%%%%%%tax. nov.
187414-2%1.1.2.1.1.1%Scrophulariaceae%%N%Penstemon%%var.%Piper%%Piper%Penstemon gairdneri var. hians%Bull. Torrey Bot. Club%27: 396%1900%%%%%%Washington (Northwestern U.S.A., Northern America)%tax. nov.
187415-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(A.Gray) D.D.Keck%(A.Gray)%D.D.Keck%Penstemon gairdneri subsp. oreganus%Amer. Midl. Naturalist%23: 596%1940%%%%%%%tax. nov.
187416-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%A.Gray%%A.Gray%Penstemon gairdneri var. oreganus%Syn. Fl. N. Amer., ed.  2.%2(1): 441%1886%%%%%%Oregon (Northwestern U.S.A., Northern America)%tax. nov.
187417-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon gairdneri subsp. typicus%Amer. Midl. Naturalist%23: 597%1940%%%%%%%tax. nov.
303532-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%G.L.Nesom%%G.L.Nesom%Penstemon galloensis%Phytologia%71: 335%1992%%%%%%Nuevo León (Mexico, Northern America)%tax. nov.
282303-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon garrettii%Contr. U.S. Natl. Herb.%20: 353%1920%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
187419-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon geniculatus%Pittonia%3(18): 310%1898%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
808107-1%1.1.2.2.1.2%Scrophulariaceae%%N%Penstemon%%spec.%Lindl.%%Lindl.%Penstemon gentianoides%Edwards's Bot. Reg.%24: t. 3%1838%%%%%%%unknown
808108-1%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Poir.%%Poir.%Penstemon gentianoides%Dict. Sci. Nat., ed. 2. [F. Cuvier]%38: 385%1825%%%%%%%unknown
187420-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Standl.%%Standl.%Penstemon gentryi%Publ. Field Mus. Nat. Hist., Bot. Ser.%17: 209%1937%%%%%%Chihuahua (Mexico, Northern America)%tax. nov.
187421-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Dorn%%Dorn%Penstemon gibbensii%Brittonia%34(3): 334%1982%%%%%%Sweetwater County (Wyoming, Northwestern U.S.A., Northern America)%tax. nov.
808109-1%1.4%Scrophulariaceae%%N%Penstemon%%spec.%C.Morren%%C.Morren%Penstemon giganteus%Ann. Soc. Roy. Agric. Gand%ii. (1846) 143. t 63.%%%%%%%%unknown
60431650-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Pursh%%Pursh%Penstemon glaber%Fl. Amer. Sept. (Pursh)%2: 738%1813%%%%%%United States of America (Northern America)%tax. nov.
187422-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(Torr.) A.Gray%(Torr.)%A.Gray%Penstemon glaber var. alpinus%Proc. Amer. Acad. Arts%6: 60%1862%%%%%%%tax. nov.
282304-2%1.3.2.1.1.1%Scrophulariaceae%%N%Penstemon%%var.%(Porter) C.C.Freeman%(Porter)%C.C.Freeman%Penstemon glaber var. brandegeei%Phytologia%60: 105%1986%%%%%%%tax. nov.
187423-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(Hook.) A.Gray%(Hook.)%A.Gray%Penstemon glaber var. cyananthus%Proc. Amer. Acad. Arts%6: 60%1862%%%%%%%tax. nov.
187424-2%1.6%Scrophulariaceae%%N%Penstemon%%f.%(Hook.) Voss in Vilm.%(Hook.)%Voss in Vilm.%Penstemon glaber f. cyananthus%Vilm. Blumengärtn., ed. 3.%1: 766%1894%%%%%%%tax. nov.
187425-2%1.1.2.1.1.2%Scrophulariaceae%%N%Penstemon%%var.%M.E.Jones%%M.E.Jones%Penstemon glaber var. fremontii%Contr. W. Bot.%12: 62%1908%%%%%%%tax. nov.
187426-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%A.Gray%%A.Gray%Penstemon glaber var. occidentalis%Proc. Amer. Acad. Arts%6: 60%1862%%%%%%Oregon (Northwestern U.S.A., Northern America)%tax. nov.
808111-1%1.5%Scrophulariaceae%%N%Penstemon%%spec.%Bevis ex W.H.Baxter%%Bevis ex W.H.Baxter%Penstemon glaberrimus%Hort. Brit. [Loudon], ed. 3.%654 (Quid ?)%1839%%%%%%%unknown
187427-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(Douglas) Regel%(Douglas)%Regel%Penstemon glaber var. speciosus%Gartenflora%24: 34%1875%%%%%%%tax. nov.
187428-2%1.7%Scrophulariaceae%%N%Penstemon%%f.%(Douglas ex Lindl) Voss in Vilm.%(Douglas ex Lindl)%Voss in Vilm.%Penstemon glaber f. speciosus%Vilm. Blumengärtn., ed. 3.%1: 766%1894%%%%%%%tax. nov.
187429-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%Rydb.%%Rydb.%Penstemon glaber var. speciosus%Mem. New York Bot. Gard.%1: 344%1900%%%%%%%tax. nov.
187430-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%Regel%%Regel%Penstemon glaber var. stenosepalus%Gartenflora%24: 34, tab. 821%1875%%%%%%Described from cultivated material%tax. nov.
187431-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%S.Watson%%S.Watson%Penstemon glaber var. utahensis%Botany [Fortieth Parallel]%217%1871%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
187432-2%1.1.2.1.1.2%Scrophulariaceae%%N%Penstemon%%var.%M.E.Jones%%M.E.Jones%Penstemon glaber var. wardii%Contr. W. Bot.%12: 62%1908%%%%%%%tax. nov.
187433-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon glabrescens%Contr. U.S. Natl. Herb.%20: 375%1920%%%%%%Colorado (Northwestern U.S.A., Northern America)%tax. nov.
808113-1%1.1.2.2.1.2.2.2.1.1%Scrophulariaceae%%N%Penstemon%%spec.%Douglas ex Lindl.%%Douglas ex Lindl.%Penstemon glandulosus%Edwards's Bot. Reg.%15: t. 1262%1829%%%%%%%unknown
187434-2%1.4%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck in Abrams%%D.D.Keck in Abrams%Penstemon glandulosus subsp. chelanensis%Ill. Fl. Pacific States%3: 764%1951%%%%%%Washington (Northwestern U.S.A., Northern America)%tax. nov.
187435-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(D.D.Keck) Cronquist%(D.D.Keck)%Cronquist%Penstemon glandulosus var. chelanensis%Vasc. Pl. Pacif. N. W. [C.L. Hitchcock & al.]%4: 388%1959%%%%%%%tax. nov.
187436-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon glastifolius%Leafl. Bot. Observ. Crit.%1: 162%1906%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
808115-1%1.5%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon glaucifolius%Pacif. Railr. Rep.%vi. 82%%%%%%%%unknown
187437-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon glaucinus%Notul. Nat. Acad. Nat. Sci. Philadelphia%71: 10%1941%%%%%%Oregon (Northwestern U.S.A., Northern America)%tax. nov.
808116-1%1.7%Scrophulariaceae%%N%Penstemon%%spec.%Scheele%%Scheele%Penstemon glaucophyllus%Linnaea%21(6): 763%1849%%%%%%%unknown
808117-1%1.1.2.1.1.4%Scrophulariaceae%%N%Penstemon%%spec.%Graham%%Graham%Penstemon glaucus%Edinburgh New Philos. J.%(July-Oct. 1829) 348%%%%%%%%unknown
187439-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%A.Gray%%A.Gray%Penstemon glaucus var. stenosepalus%Proc. Amer. Acad. Arts%6: 70%1862%%%%%%Colorado (Northwestern U.S.A., Northern America)%tax. nov.
187440-2%1.1.2.1.1.3%Scrophulariaceae%%N%Penstemon%%spec.%(Piper) Pennell & D.D.Keck%(Piper)%Pennell & D.D.Keck%Penstemon globosus%Publ. Carnegie Inst. Wash.%520: 294%1940%%%%%%%tax. nov.
77207036-1%1.2%Scrophulariaceae%%N%Penstemon%%spec.%Purdy%%Purdy%Penstemon × gloxinioides%Perenn. Pl.%39%1927%%%%%%%tax. nov.
187441-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%N.H.Holmgren%%N.H.Holmgren%Penstemon goodrichii%Brittonia%30: 416, fig%1978%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
808119-1%1.6%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon gordonianus%Pacif. Railr. Rep.%xii. II. Bot. 45%%%%%%%%unknown
808118-1%1.6%Scrophulariaceae%%N%Penstemon%%spec.%Hook.%%Hook.%Penstemon gordonii%Bot. Mag.%73: t. 4319%1847%%%%%%%unknown
187442-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon gormanii%Ottawa Naturalist%16: 39%1902%%%%%%Alaska (Subarctic America, Northern America)%tax. nov.
808121-1%1.5%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon gracilentus%Pacif. Railr. Rep.%vi. 82.%%%%%%%%unknown
187443-2%1.1.2.1%Scrophulariaceae%%N%Penstemon%%var.%Jeps.%%Jeps.%Penstemon gracilentus var. ursorum%Man. Fl. Pl. Calif. [Jepson]%916%1925%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
808122-1%1.1.2.1.1.3%Scrophulariaceae%%N%Penstemon%%spec.%Nutt.%%Nutt.%Penstemon gracilis%Gen. N. Amer. Pl. [Nuttall].%2: 52%1818%%%%%%%unknown
891436-1%1.1.2.1.1.3%Scrophulariaceae%%N%Penstemon%%f.%B.Boivin%%B.Boivin%Penstemon gracilis f. scoggannii%Phytologia%22(5): 331%1972%%%%%%%unknown
187445-2%1.2%Scrophulariaceae%%N%Penstemon%%f.%B.Boivin%%B.Boivin%Penstemon gracilis f. scoggansii%Phytologia%22: 331%1972%%%%%%Manitoba (Western Canada, Northern America)%tax. nov.
187446-2%1.2.2.1%Scrophulariaceae%%N%Penstemon%%subsp.%Pennell%%Pennell%Penstemon gracilis subsp. wisconsinensis%Monogr. Acad. Nat. Sci. Philadelphia%1: 571%1935%%Pennell (p. 234) proposed “P. wisconsinensis” as the name of a new species, and on p. 571, he made “P. gracilis var. wisconsinensis (Pennell) Pennell” as a new combination; on p. 632, he mentioned that he substituted “P. wisconsinensis” with P. gracilis var. wisconsinensis.%%%%Wisconsin (North-Central U.S.A., Northern America)%tax. nov.
187447-2%1.3.2.1%Scrophulariaceae%%N%Penstemon%%var.%(Pennell) Fassett%(Pennell)%Fassett%Penstemon gracilis var. wisconsinensis%Spring Fl. Wisconsin, ed. 2%144%1938%%%Scrophulariaceae Penstemon gracilis Nutt. subsp. wisconsinensis Pennell%%%%stat. nov.
187448-2%1.5.2.1%Scrophulariaceae%%N%Penstemon%%spec.%D.D.Keck%%D.D.Keck%Penstemon grahamii%Ann. Carnegie Mus.%26: 331%1937%%The article author Graham (p. 8) mentioned that D.D. keck is the author for the Penstemon treatment%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
320295-2%1.1.1.1.2.1%Scrophulariaceae%%N%Penstemon%%spec.%Nutt.%%Nutt.%Penstemon grandiflorus%Gen. N. Amer. Pl. [Nuttall].%2: 53%1818%nom. illeg. nom. superfl.%%%%%United States of America (Northern America)%nom. nov.
808123-1%1.1.2.1.1.1.2.1%Scrophulariaceae%%N%Penstemon%%spec.%Nutt.%%Nutt.%Penstemon grandiflorus%Cat. Pl. Upper Louisiana%no. 64%1813%nom. inval. nom. subnud.    Protologue (quoted) Flower about the size and form of Digitalis purpurea, and spontaneously subject to great variation in color [No descriptive element given for the validation of the name P. grandiflorus]%%%%%%tax. nov.
187518-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon griffinii%Bot. Gaz.%56: 70%1913%%%%%%Colorado (Northwestern U.S.A., Northern America)%tax. nov.
187519-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Eastw.%%Eastw.%Penstemon grinnellii%Bull. Torrey Bot. Club%32: 207%1905%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187520-2%1.2.2.1%Scrophulariaceae%%N%Penstemon%%subsp.%(M.E.Jones) Munz%(M.E.Jones)%Munz%Penstemon grinnellii subsp. scrophularioides%Aliso%4: 99%1958%%%%%%%tax. nov.
970359-1%1.1.2.1.1.6%Scrophulariaceae%%N%Penstemon%%var.%(M.E.Jones) N.H.Holmgren%(M.E.Jones)%N.H.Holmgren%Penstemon grinnellii var. scrophularioides%Brittonia%44(4): 482%1992%%%Scrophulariaceae Penstemon scrophularioides%%%%comb. nov.
187521-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%A.Heller%%A.Heller%Penstemon guadalupensis%Contr. Herb. Franklin Marshall Coll.%no. 1, 92, pl. 7%1895%%%%%%Texas (South-Central U.S.A., Northern America)%tax. nov.
187522-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%Pennell%%Pennell%Penstemon guadalupensis subsp. ernesti%Monogr.  Acad.  Nat.  Sci.  Philadelphia%1: 252%1935%%%%%%Texas (South-Central U.S.A., Northern America)%tax. nov.
187523-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(Pennell) Cory%(Pennell)%Cory%Penstemon guadalupensis var. ernesti%Rhodora%38: 407%1936%%%%%%%tax. nov.
187524-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%Pennell%%Pennell%Penstemon guadalupensis subsp. typicus%Monogr.  Acad.  Nat.  Sci.  Philadelphia%1: 252%1935%%%%%%%tax. nov.
808127-1%1.4%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon hallii%Proc. Amer. Acad. Arts%vi. (1862) 70.%%%%%%%%unknown
187525-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%A.Gray%%A.Gray%Penstemon hallii var. arizonicus%Syn. Fl. N. Amer.%2(1): 263%1878%%%%%%Arizona (Southwestern U.S.A., Northern America)%tax. nov.
187526-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon hansonii%Univ. Wyoming Publ. Sci., Bot.%1: 129%1926%%%%%%Arizona (Southwestern U.S.A., Northern America)%tax. nov.
808128-1%1.4%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon harbourii%Proc. Amer. Acad. Arts%vi. (1862) 71.%%%%%%%%unknown
187527-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Penland%%Penland%Penstemon harringtonii%Madroño%14: 153, fig. 1%1958%%%%%%Colorado (Northwestern U.S.A., Northern America)%tax. nov.
808129-1%1.2.2.1.1.2%Scrophulariaceae%%N%Penstemon%%spec.%Benth.%%Benth.%Penstemon hartwegii%Pl. Hartw. [Bentham]%48%1840%%%%%%%unknown
808130-1%1.5%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon havardii%Proc. Amer. Acad. Arts%xx. (1885) 306.%%%%%%%%unknown
187528-2%1.3.2.1.1.1%Scrophulariaceae%%N%Penstemon%%spec.%S.Watson%%S.Watson%Penstemon haydenii%Bot. Gaz.%16(11): 311%1891%%Eponymy: Dr. F.V. Hayden%%%%Wyoming and Nebraska, United States of America (Northern America)%tax. nov.
187529-2%1.5%Scrophulariaceae%%N%Penstemon%%spec.%Small%%Small%Penstemon helleri%Bull. Torrey Bot. Club%25(9): 471%1898%%%%%%Texas (South-Central U.S.A., Northern America)%tax. nov.
187530-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Straw%%Straw%Penstemon henricksonii%Madroño%23: 263 (-265), fig. 1%1976%%%%%%Coahuila (Mexico, Northern America)%tax. nov.
187531-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%M.Peck%%M.Peck%Penstemon hesperius%Torreya%32: 152%1932%%%%%%Oregon (Northwestern U.S.A., Northern America)%tax. nov.
187532-2%1.3.2.1.1.1%Scrophulariaceae%%N%Penstemon%%spec.%Torr. & A.Gray%%Torr. & A.Gray%Penstemon heterander%Pacific Railr. Rep. 2, Pt. 1, Bot. (Beckwith & Gunnison)%123%1857%%The gender of Penstemon is masculine. Torrey & A. Gray cited the epithet as heterandrum (neuter), which has been corrected to heterander (masculine).%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
808134-1%1.5%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon heterodoxus%Syn. Fl. N. Amer.%2(1): 269%1878%%%%%%%unknown
187533-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(Greene) D.D.Keck%(Greene)%D.D.Keck%Penstemon heterodoxus subsp. cephalophorus%Amer. Midl. Naturalist%33: 165%1945%%%%%%%tax. nov.
970360-1%1.1.2.1.1.6%Scrophulariaceae%%N%Penstemon%%var.%(Greene) N.H.Holmgren%(Greene)%N.H.Holmgren%Penstemon heterodoxus var. cephalophorus%Brittonia%44(4): 482%1992%%%Scrophulariaceae Penstemon cephalophorus%%%%comb. nov.
970361-1%1.1.2.1.1.6%Scrophulariaceae%%N%Penstemon%%var.%(D.D.Keck) N.H.Holmgren%(D.D.Keck)%N.H.Holmgren%Penstemon heterodoxus var. shastensis%Brittonia%44(4): 482%1992%%%Scrophulariaceae Penstemon shastensis D.D.Keck%%%%comb. nov.
187534-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon heterodoxus subsp. typicus%Amer. Midl. Naturalist%33: 163%1945%%%%%%%tax. nov.
808135-1%1.6%Scrophulariaceae%%N%Penstemon%%spec.%S.Watson%%S.Watson%Penstemon heterophyllus%Botany [Fortieth Parallel]%222%1871%%%%%%%unknown
808136-1%1.1.2.1.1.2.2.2%Scrophulariaceae%%N%Penstemon%%spec.%Lindl.%%Lindl.%Penstemon heterophyllus%Edwards's Bot. Reg.%22: t. 1899%1836%%%%%%%unknown
187535-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon heterophyllus subsp. australis%Univ. Calif. Publ. Bot.%16: 411%1932%%%%%%%tax. nov.
187536-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%Munz & I.M.Johnst.%%Munz & I.M.Johnst.%Penstemon heterophyllus var. australis%Bull. S. Calif. Acad. Sci.%23: 40%1924%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187537-2%1.2.2.1.1.1%Scrophulariaceae%%N%Penstemon%%var.%(Benth.) Jeps.%(Benth.)%Jeps.%Penstemon heterophyllus var. azureus%Man. Fl. Pl. Calif. [Jepson]%917%1925%%%%%%%tax. nov.
187538-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%S.Watson%%S.Watson%Penstemon heterophyllus var. latifolius%Botany [Fortieth Parallel]%222%1871%%%%%%Wahsatch Mts, Utah (Southwestern U.S.A., Northern America)%tax. nov.
187539-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon heterophyllus subsp. purdyi%Univ. Calif. Publ. Bot.%16: 409, fig. 15%1932%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187540-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(D.D.Keck) McMinn%(D.D.Keck)%McMinn%Penstemon heterophyllus var. purdyi%Man. Calif. Shrubs%518%1939%%%%%%%tax. nov.
187541-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon heterophyllus subsp. spinulosus%Univ. Calif. Publ. Bot.%16: 410%1932%%%%%%%tax. nov.
187542-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon heterophyllus subsp. typicus%Univ. Calif. Publ. Bot.%16: 411%1932%%%%%%%tax. nov.
187543-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%I.M.Johnst.%%I.M.Johnst.%Penstemon hians%Contr. Gray Herb.%68: 92%1923%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187544-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Straw%%Straw%Penstemon hidalgensis%Brittonia%15: 51%1963%%%%%%Mexico (Northern America)%tax. nov.
60437378-2%1.1%Scrophulariaceae%%N%Penstemon%%spec.%(Neese) N.H.Holmgren & N.D.Atwood%(Neese)%N.H.Holmgren & N.D.Atwood%Penstemon higginsii%Utah Fl., ed. 3.%625%2003%%%Scrophulariaceae Penstemon leonardii  var. higginsii Neese%%%%comb. et stat. nov.
187545-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Straw%%Straw%Penstemon hintonii%Brittonia%15: 61%1963%%%%%%Guerrero (Mexico, Northern America)%tax. nov.
808137-1%1.1.2.1.1.2%Scrophulariaceae%%N%Penstemon%%spec.%Willd.%%Willd.%Penstemon hirsutus%Sp. Pl., ed. 4 [Willdenow]%3(1): 227%1800%%%%%%%unknown
187546-2%1.2%Scrophulariaceae%%N%Penstemon%%f.%Farw.%%Farw.%Penstemon hirsutus f. albiflorus%Amer. Midl. Naturalist%11: 68%1928%%%%%%Michigan (Northeastern U.S.A., Northern America)%tax. nov.
290696-2%1.3.2.1%Scrophulariaceae%%N%Penstemon%%spec.%S.L.Clark%%S.L.Clark%Penstemon holmgrenii%Great Basin Naturalist%37(1): 100%1977%nom. inval.    Replaced synonym lacking.%On pp. 100 and 258, Clark proposed “Penstemon holmgrenii” as nom. nov. and based it on “P. cyananthus Hook. ssp. subglaber Pennell in Scrophulariaceae of the Rocky Mountain States. Contributions from the United States National Herbarium 20(9):313-381 (1920). Not P. subglaber Rydb.” The name “P. cyananthus subsp. subglaber Pennell” itself was published as a new combination, and it was based on P. fremontii var. subglaber A.Gray.%%%%%tax. nov.
808138-1%1.2.2.1.1.1%Scrophulariaceae%%N%Penstemon%%spec.%G.Don%%G.Don%Penstemon humboldtii%Gen. Hist.%iv. 640%%%%%%%%unknown
808139-1%1.1.2.1.1.5%Scrophulariaceae%%N%Penstemon%%spec.%Nutt. ex A.Gray%%Nutt. ex A.Gray%Penstemon humilis%Proc. Amer. Acad. Arts%vi. (1862) 69.%%%%%%%%unknown
187547-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(A.Gray) D.D.Keck%(A.Gray)%D.D.Keck%Penstemon humilis subsp. brevifolius%Amer. Midl. Naturalist%33: 184%1945%%%%%%%tax. nov.
187548-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%A.Gray%%A.Gray%Penstemon humilis var. brevifolius%Syn. Fl. N. Amer.%2, pt. 1: 267%1878%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
304353-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%S.L.Welsh%%S.L.Welsh%Penstemon humilis var. desereticus%Rhodora%95: 416        fig%1993%%Sic specimens distributed previously as P. humilis%%%%west side of Deep Creek Mountains, Juab County (Utah, Southwestern U.S.A., Northern America)%tax. nov.
187549-2%1.1.2.1.1.1%Scrophulariaceae%%N%Penstemon%%var.%(Pennell) Reveal%(Pennell)%Reveal%Penstemon humilis var. obtusifolius%Great Basin Naturalist%35(4): 369%1976%%%%%%%comb. et stat. nov.
187550-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(Pennell) D.D.Keck%(Pennell)%D.D.Keck%Penstemon humilis subsp. obtusifolius%Amer. Midl. Naturalist%33: 184%1945%%%%%%%tax. nov.
187551-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon humilis subsp. typicus%Amer. Midl. Naturalist%33: 182%1945%%%%%%%tax. nov.
807897-1%1.4%Scrophulariaceae%%N%Penstemon%%spec.%hort.%%hort.%Penstemon × hybridus%Vilm. Blumengärtn., ed. 3.%1: 767, in syn.%1895%%%%%%%unknown
282305-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%N.D.Atwood & S.L.Welsh%%N.D.Atwood & S.L.Welsh%Penstemon idahoensis%Great Basin Naturalist%48: 496 (-498), fig%1989%%%%%%Idaho (Northwestern U.S.A., Northern America)%tax. nov.
808140-1%1.1.2.1.1.6%Scrophulariaceae%%N%Penstemon%%spec.%Nutt. ex A.DC.%%Nutt. ex A.DC.%Penstemon ilicifolius%Prodr. [A. P. de Candolle]%10: 593%1846%%%%%%%unknown
808141-1%1.5%Scrophulariaceae%%N%Penstemon%%spec.%Trautv.%%Trautv.%Penstemon imberbis%Bull. Sci. Acad. Imp. Sci. Saint-Pétersbourg%v. (1839) 345.%%%%%%%%unknown
187552-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%N.H.Holmgren%%N.H.Holmgren%Penstemon immanifestus%Brittonia%30: 334, fig%1978%%%%%%Nevada (Southwestern U.S.A., Northern America)%tax. nov.
187553-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Tidestr.%%Tidestr.%Penstemon incanus%Contr. U.S. Natl. Herb.%25: 488, 495%1925%%%%%%%tax. nov.
187554-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Brandegee%%Brandegee%Penstemon incertus%Bot. Gaz.%27: 454%1899%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
808143-1%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Poir.%%Poir.%Penstemon inermis%Dict. Sci. Nat., ed. 2. [F. Cuvier]%38: 385%1825%%%%%%%unknown
187555-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Crosswh.%%Crosswh.%Penstemon inflatus%Amer. Midl. Naturalist%74: 436%1965%%%%%%New Mexico (South-Central U.S.A., Northern America)%tax. nov.
187556-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon interruptus%Leafl. Bot. Observ. Crit.%1: 163%1906%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187557-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%A.Heller%%A.Heller%Penstemon intonsus%Muhlenbergia%1: 44%1904%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187558-2%1.1.2.1.1.1%Scrophulariaceae%%N%Penstemon%%spec.%B.L.Rob.%%B.L.Rob.%Penstemon isophyllus%Proc. Boston Soc. Nat. Hist.%31: 267%1904%%%%%%Mexico (Northern America)%tax. nov.
310123-2%1.2.2.1.1.2%Scrophulariaceae%%N%Penstemon%%spec.%Abrams%%Abrams%Penstemon jacintensis%Bull. Torrey Bot. Club%33(8): 445%1906%%%%%%Riverside County (California, Southwestern U.S.A., Northern America)%tax. nov.
808148-1%1.8%Scrophulariaceae%%N%Penstemon%%spec.%Hook.%%Hook.%Penstemon jaffrayanus%Bot. Mag.%84: t. 5045%1858%%specific epithet is derrived from Mr. Jaffray' s name%%%%%tax. nov.
187561-2%1.2.2.1%Scrophulariaceae%%N%Penstemon%%var.%(A.Gray) Jeps.%(A.Gray)%Jeps.%Penstemon jaffrayanus var. parvulus%Man. Fl. Pl. Calif. [Jepson]%917%1925%%%%%%%tax. nov.
290694-2%1.2%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon jamesii%%%%%%%%%%tax. nov.
808149-1%1.7%Scrophulariaceae%%N%Penstemon%%spec.%Benth.%%Benth.%Penstemon jamesii%Prodr. [A. P. de Candolle]%10: 325%1846%%%%%%%unknown
187563-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon jamesii subsp. breviculus%Bull. Torrey Bot. Club%65: 241%1938%%%%%%New Mexico & Colorado, United States of America (Northern America)%tax. nov.
187564-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(Pennell) D.D.Keck%(Pennell)%D.D.Keck%Penstemon jamesii subsp. ophianthus%Bull. Torrey Bot. Club%65: 240%1938%%%%%%%tax. nov.
187565-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon jamesii subsp. typicus%Bull. Torrey Bot. Club%65: 239%1938%%%%%%%tax. nov.
187566-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%N.H.Holmgren%%N.H.Holmgren%Penstemon janishiae%Brittonia%31: 223 (-224), fig%1979%%%%%%Nevada (Southwestern U.S.A., Northern America)%tax. nov.
808150-1%1.2.2.1%Scrophulariaceae%%N%Penstemon%%spec.%A.Murray bis%%A.Murray bis%Penstemon jeffreyanus%Circ. Oreg. Comm.%2.%%%%%%%%unknown
187567-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon jonesii%Contr. U.S. Natl. Herb.%20: 338%1920%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
282306-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Clokey%%Clokey%Penstemon keckii%Madroño%4: 128%1937%%%%%%Nevada (Southwestern U.S.A., Northern America)%tax. nov.
187569-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon kennedyi%Proc. Biol. Soc. Washington%17: 97%1904%%%%%%Nevada (Southwestern U.S.A., Northern America)%tax. nov.
808153-1%1.6%Scrophulariaceae%%N%Penstemon%%spec.%S.Watson%%S.Watson%Penstemon kingii%Botany [Fortieth Parallel]%222%1871%%%%%%%unknown
187570-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%Kellogg%%Kellogg%Penstemon kingii var. glaucus%Proc. Calif. Acad. Sci.%5: 39%1873%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
808154-1%1.1.2.1.1.5%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon kleei%Bull. Torrey Bot. Club%10(10-11): 127%1883%%%%%%%unknown
77128955-1%1.3%Scrophulariaceae%%N%Penstemon%%spec.%D.Estes%%D.Estes%Penstemon kralii%J. Bot. Res. Inst. Texas%6(1): 1%2012%%%%%%Alabama (Southeastern U.S.A., Northern America);Tennessee (Southeastern U.S.A., Northern America);%tax. nov.
808155-1%1.4%Scrophulariaceae%%N%Penstemon%%spec.%G.Don%%G.Don%Penstemon kunthii%Hort. Brit. [Loudon]%243%1830%%%%%%%unknown
60447182-2%1.1%Scrophulariaceae%%N%Penstemon%%spec.%(A.Gray) Mast. ex Hook.f.%(A.Gray)%Mast. ex Hook.f.%Penstemon labrosus%Bot. Mag.%110: t. 6738%1884%%%Scrophulariaceae Penstemon barbatus  var. labrosus A.Gray%%%%comb. et stat. nov.
808156-1%1.1.2.1.1.1.2.1.1.1%Scrophulariaceae%%N%Penstemon%%spec.%Mast.%%Mast.%Penstemon labrosus%Gard. Chron.%n.s., 20: 536%1883%nom. inval.    provisional name. Masters's text quoted here: We await an authoritative expression of opinion (on the rank of the taxon, whether a variety or species), which we learn is likely to be given in a forthcoming number of the Botanical Magazine (110: t. 6738. Feb 1884).%Penstemon labrosus not ascribed to any author within the protologue. M. T. Masters was the editor of the journal.%%%%%comb. et stat. nov.
187572-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon lacerellus%Leafl. Bot. Observ. Crit.%1: 161%1906%%%%%%Nevada (Southwestern U.S.A., Northern America)%tax. nov.
320160-2%1.2%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon laetus%Proc. Boston Soc. Nat. Hist.%7: 147%1859%%[Gandhi 7 Aug 2000]%%%%Near Fort Tejon, California (Southwestern U.S.A., Northern America)%tax. nov.
808158-1%1.4%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon laetus%Proc. Amer. Acad. Arts%vi. (1866) 76.%%%%%%%%unknown
287399-2%1.1%Scrophulariaceae%%N%Penstemon%%f.%P.C.Everett%%P.C.Everett%Penstemon laetus f. albus%Aliso%2: 181%1950%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187573-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon laetus subsp. filiformis%Univ. Calif. Publ. Bot.%16: 394%1932%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187574-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(D.D.Keck) McMinn%(D.D.Keck)%McMinn%Penstemon laetus var. filiformis%Man. Calif. Shrubs%517%1939%%%%%%%tax. nov.
187575-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon laetus subsp. leptosepalus%Univ. Calif. Publ. Bot.%16: 393%1932%%%%%%%tax. nov.
187576-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%Greene ex A.Gray%%Greene ex A.Gray%Penstemon laetus var. leptosepalus%Syn. Fl. N. Amer., ed.  2.%2(1): 442%1886%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187577-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(Regel) D.D.Keck%(Regel)%D.D.Keck%Penstemon laetus subsp. roezlii%Univ. Calif. Publ. Bot.%16: 390 (fig. 10)%1932%%%%%%%tax. nov.
187578-2%1.1.2.1.1.1%Scrophulariaceae%%N%Penstemon%%var.%(Regel) Jeps.%(Regel)%Jeps.%Penstemon laetus var. roezlii%Man. Fl. Pl. Calif. [Jepson]%916%1925%%%%%%%tax. nov.
187579-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon laetus subsp. sagittatus%Univ. Calif. Publ. Bot.%16: 395, fig. 12%1932%%%%%%California & Oregon, United States of America (Northern America)%tax. nov.
187580-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(D.D.Keck) McMinn%(D.D.Keck)%McMinn%Penstemon laetus var. sagittatus%Man. Calif. Shrubs%518%1939%%%%%%%tax. nov.
187581-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon laetus subsp. typicus%Univ. Calif. Publ. Bot.%16: 392%1932%%%%%%%tax. nov.
187582-2%1.2.2.1.1.1%Scrophulariaceae%%N%Penstemon%%spec.%Aiton%%Aiton%Penstemon laevigatus%Hort. Kew. [W. Aiton]%2: 361%1789%%%%%%%tax. nov.
187583-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(Pennell) R.W.Benn.%(Pennell)%R.W.Benn.%Penstemon laevigatus subsp. alluviorum%Phytologia%9: 57%1963%%%%%%%tax. nov.
287401-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%R.W.Benn.%%R.W.Benn.%Penstemon laevigatus var. angustus%%%%%%%%%no info%tax. nov.
187584-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(Small) R.W.Benn.%(Small)%R.W.Benn.%Penstemon laevigatus subsp. calycosus%Phytologia%9: 57%1963%%%%%%%tax. nov.
187585-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(Small) Farw.%(Small)%Farw.%Penstemon laevigatus var. calycosus%Pap. Michigan Acad. Sci.%26, pt. 1: 18%1941%%%%%%%tax. nov.
187586-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%Britton%%Britton%Penstemon laevigatus var. canescens%Mem. Torrey Bot. Club%2: 30%1890%%%%%%West Virginia (Northeastern U.S.A., Northern America)%tax. nov.
287400-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(Pennell) R.W.Benn.%(Pennell)%R.W.Benn.%Penstemon laevigatus var. deamii%Phytologia%9: 57%1963%%%%%%%tax. nov.
187587-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(Nutt.) R.W.Benn.%(Nutt.)%R.W.Benn.%Penstemon laevigatus subsp. digitalis%Phytologia%9: 57%1963%%%%%%%tax. nov.
187588-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(Sweet) A.Gray%(Sweet)%A.Gray%Penstemon laevigatus var. digitalis%Syn. Fl. N. Amer.%2(1): 268%1878%%%%%%%tax. nov.
187589-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon laevis%Contr. U.S. Natl. Herb.%20: 347%1920%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
808161-1%1.2.2.1.1.2%Scrophulariaceae%%N%Penstemon%%spec.%Benth.%%Benth.%Penstemon lanceolatus%Pl. Hartw. [Bentham]%22%1839%%%%%%%unknown
808162-1%1.1.2.1.1.4%Scrophulariaceae%%N%Penstemon%%spec.%Hook. & Arn.%%Hook. & Arn.%Penstemon laricifolius%Bot. Beechey Voy.%376%1839%%%%%%%unknown
187590-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(A.Nelson) D.D.Keck%(A.Nelson)%D.D.Keck%Penstemon laricifolius subsp. exilifolius%Bull. Torrey Bot. Club%64: 381%1937%%%%%%%tax. nov.
187591-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%Payson%%Payson%Penstemon laricifolius var. exilifolius%Univ. Wyoming Publ. Sci., Bot.%1: 97%1924%%%%%%%tax. nov.
187592-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon laricifolius subsp. typicus%Bull. Torrey Bot. Club%64: 380%1937%%%%%%%tax. nov.
187593-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon lassenianus%Leafl. Bot. Observ. Crit.%1: 164%1906%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187594-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Krautter%%Krautter%Penstemon latifolius%Contr. Bot. Lab. Morris Arbor. Univ. Pennsylvania%3: 194%1908%%%%%%%tax. nov.
808164-1%1.1.2.1.1.2%Scrophulariaceae%%N%Penstemon%%spec.%Hoffmanns.%%Hoffmanns.%Penstemon latifolius%Verz. Pfl.-Kult.%98%1824%%%%%%%unknown
808166-1%1.5%Scrophulariaceae%%N%Penstemon%%spec.%Krautter%%Krautter%Penstemon latifolius%Trans. & Proc. Bot. Soc. Pennsylvania%ii. 194 (1911)%%%%%%%%unknown
187595-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon latiusculus%Leafl. Bot. Observ. Crit.%1: 161%1906%%%%%%Colorado (Northwestern U.S.A., Northern America)%tax. nov.
187596-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon laxiflorus%Monogr.  Acad.  Nat.  Sci.  Philadelphia%no. 1: 229%1935%%%%%%Georgia & Florida to Arkansas, Oklahoma & Texas, United States of America (Northern America)%tax. nov.
187597-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon laxus%Bot. Gaz.%54: 147%1912%%%%%%Idaho (Northwestern U.S.A., Northern America)%tax. nov.
187598-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon leiophyllus%Contr. U.S. Natl. Herb.%20: 346%1920%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
282307-2%1.4%Scrophulariaceae%%N%Penstemon%%var.%(Crosswh.) N.H.Holmgren%(Crosswh.)%N.H.Holmgren%Penstemon leiophyllus var. francisci-pennellii%Intermount. Fl. [Cronquist et al.]%4: 432%1984%%%%%%%tax. nov.
282308-2%1.4%Scrophulariaceae%%N%Penstemon%%var.%(Clokey) N.H.Holmgren%(Clokey)%N.H.Holmgren%Penstemon leiophyllus var. keckii%Intermount. Fl. [Cronquist et al.]%4: 432%1984%%%%%%%tax. nov.
187599-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%(D.D.Keck) D.D.Keck & Cronquist%(D.D.Keck)%D.D.Keck & Cronquist%Penstemon lemhiensis%Brittonia%8: 248%1957%%%%%%%tax. nov.
808170-1%1.1.2.1.1.5%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon lemmonii%Bot. California [W.H.Brewer]%i. 557.%1876%%%%%%%unknown
187601-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon lentus%Contr. U.S. Natl. Herb.%20: 359%1920%%%%%%Colorado, Utah, United States of America (Northern America)%tax. nov.
187602-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon lentus subsp. albiflorus%Amer. Midl. Naturalist%23: 616%1940%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
187603-2%1.4%Scrophulariaceae%%N%Penstemon%%var.%(D.D.Keck) Reveal%(D.D.Keck)%Reveal%Penstemon lentus var. albiflorus%Great Basin Naturalist%35: 370%1976%%%%%%%tax. nov.
187604-2%1.5%Scrophulariaceae%%N%Penstemon%%spec.%Rydb.%%Rydb.%Penstemon leonardii%Bull. Torrey Bot. Club%40: 483%1913%%%%%%Utah, Idaho, United States of America (Northern America)%tax. nov.
282309-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%Neese%%Neese%Penstemon leonardii var. higginsii%Great Basin Naturalist%46: 459%1986%%%%%%Washington County (Utah, Southwestern U.S.A., Northern America)%tax. nov.
282310-2%1.4%Scrophulariaceae%%N%Penstemon%%var.%(N.H.Holmgren) Neese%(N.H.Holmgren)%Neese%Penstemon leonardii var. patricus%Great Basin Naturalist%46: 460%1986%%%%%%%tax. nov.
187605-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Straw%%Straw%Penstemon leonensis%Bol. Soc. Bot. México%no. 27: 8%1962%%%%%%Nuevo León (Mexico, Northern America)%tax. nov.
187449-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon leptanthus%Contr. U.S. Natl. Herb.%20: 339%1920%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
187450-2%1.2%Scrophulariaceae%%N%Penstemon%%spec.%Rydb.%%Rydb.%Penstemon leptophyllus%Fl. Rocky Mts.%773, 1066%1917%%%%%%Idaho (Northwestern U.S.A., Northern America)%tax. nov.
187451-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon leucanthus%Pittonia%1(2): 72%1887%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
808176-1%1.7%Scrophulariaceae%%N%Penstemon%%spec.%Benth.%%Benth.%Penstemon lewisii%Prodr. [A. P. de Candolle]%10: 321%1846%%%%%%%unknown
808177-1%1.4%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon linarioides%Rep. U.S. Mex. Bound., Bot. [Emory]%112.%%%%%%%%unknown
187453-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%Munz & I.M.Johnst.%%Munz & I.M.Johnst.%Penstemon linarioides var. californicus%Bull. S. Calif. Acad. Sci.%23: 31%1924%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187454-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(A.Nelson) D.D.Keck%(A.Nelson)%D.D.Keck%Penstemon linarioides subsp. coloradoensis%Bull. Torrey Bot. Club%64: 375%1937%%%%%%%tax. nov.
77162267-1%1.3%Scrophulariaceae%%N%Penstemon%%var.%(A.Nelson) C.C.Freeman%(A.Nelson)%C.C.Freeman%Penstemon linarioides var. coloradoensis%PhytoKeys%80: 35%2017%%doi:10.3897/phytokeys.80.12962%Scrophulariaceae Penstemon coloradoensis A.Nelson%%%%stat. nov.
187455-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon linarioides subsp. compactifolius%Bull. Torrey Bot. Club%64: 376%1937%%%%%%Arizona (Southwestern U.S.A., Northern America)%tax. nov.
187456-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon linarioides subsp. maguirei%Bull. Torrey Bot. Club%64: 378%1937%%%%%%Arizona & New Mexico, United States of America (Northern America)%tax. nov.
187457-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(D.D.Keck) A.Nelson%(D.D.Keck)%A.Nelson%Penstemon linarioides var. maguirei%Univ. Wyoming Publ.%3: 105%1937%%%%%%%tax. nov.
187458-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%A.Nelson%%A.Nelson%Penstemon linarioides var. seorsus%Bot. Gaz.%54: 147%1912%%%%%%Idaho (Northwestern U.S.A., Northern America)%tax. nov.
187459-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(A.Gray) D.D.Keck%(A.Gray)%D.D.Keck%Penstemon linarioides subsp. sileri%Bull. Torrey Bot. Club%64: 374%1937%%%%%%%tax. nov.
187460-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%A.Gray%%A.Gray%Penstemon linarioides var. sileri%Syn. Fl. N. Amer.%2(1): 270%1878%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
310149-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon linarioides subsp. taosensis%Bull. Torrey Bot. Club%64: 373%1937%%%%%%New Mexico (South-Central U.S.A., Northern America)%tax. nov.
187462-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon linarioides subsp. typicus%Bull. Torrey Bot. Club%64: 376%1937%%%%%%%tax. nov.
187463-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%D.D.Keck%%D.D.Keck%Penstemon linarioides var. viridis%Bull. Torrey Bot. Club%64: 375%1937%%%%%%Utah & Arizona, United States of America (Northern America)%tax. nov.
187464-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%J.M.Coult. & Fisher%%J.M.Coult. & Fisher%Penstemon linearifolius%Bot. Gaz.%18: 302%1893%%%%%%Idaho (Northwestern U.S.A., Northern America)%tax. nov.
187465-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon lineolatus%Leafl. Bot. Observ. Crit.%1: 164%1906%%%%%%Nevada (Southwestern U.S.A., Northern America)%tax. nov.
808180-1%1.1.2.2.1.4%Scrophulariaceae%%N%Penstemon%%spec.%hort. ex Lem.%%hort. ex Lem.%Penstemon lobbii%Ill. Hort.%(1862) t. 315%%%%%%%%unknown
187466-2%1.1.2.1.1.1%Scrophulariaceae%%N%Penstemon%%spec.%(Pennell) S.L.Clark%(Pennell)%S.L.Clark%Penstemon longiflorus%Great Basin Naturalist%35(4): 434%1976%%%%%%%comb. et stat. nov.
808181-1%1.7%Scrophulariaceae%%N%Penstemon%%spec.%Scheele%%Scheele%Penstemon longifolius%Linnaea%21(6): 764%1849%%%%%%%unknown
77154920-1%1.3%Scrophulariaceae%%N%Penstemon%%spec.%R.L.Johnson & M.R.Stevens%%R.L.Johnson & M.R.Stevens%Penstemon luculentus%PhytoKeys%63: 49%2016%%doi:10.3897/phytokeys.63.7952%%%%%nom. nov.
301741-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%G.L.Nesom%%G.L.Nesom%Penstemon luteus%Phytologia%71: 333%1992%%%%%%Coahuila (Mexico, Northern America)%tax. nov.
187467-2%1.3.2.1.1.1%Scrophulariaceae%%N%Penstemon%%spec.%(A.Gray) A.Gray%(A.Gray)%A.Gray%Penstemon lyallii%Syn. Fl. N. Amer., ed.  2.%2(1): 440%1886%%%Scrophulariaceae Penstemon menziesii Hook. var. lyallii A.Gray%%%%comb. et stat. nov.
187468-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%Krautter%%Krautter%Penstemon lyallii var. linearifolius%Contr. Bot. Lab. Morris Arbor. Univ. Pennsylvania%3: 104%1908%%%%%%%tax. nov.
187469-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon macbridei%Bot. Gaz.%52: 272%1911%%%%%%Idaho (Northwestern U.S.A., Northern America)%tax. nov.
808183-1%1.5%Scrophulariaceae%%N%Penstemon%%spec.%Paxton%%Paxton%Penstemon × macewani%Paxton's Mag. Bot.%14(164): 174%1847%%%%%%%unknown
808184-1%1.3.2.1.1.1%Scrophulariaceae%%N%Penstemon%%spec.%Knowles & Westc.%%Knowles & Westc.%Penstemon mackayanus%Fl. Cab.%ii. (1838) 117%%%%%%%%unknown
187470-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Eastw.%%Eastw.%Penstemon macranthus%Bull. Torrey Bot. Club%32: 207%1905%%%%%%Nevada (Southwestern U.S.A., Northern America)%tax. nov.
187471-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon magnus%Contr. U.S. Natl. Herb.%20: 346%1920%%%%%%Colorado (Northwestern U.S.A., Northern America)%tax. nov.
187472-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Crosswh.%%Crosswh.%Penstemon maguirei%Leafl. W. Bot.%10: 171%1965%%%%%%Nevada (Southwestern U.S.A., Northern America)%tax. nov.
187473-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%(D.D.Keck) N.H.Holmgren%(D.D.Keck)%N.H.Holmgren%Penstemon marcusii%Brittonia%31: 105%1979%%%%%%%tax. nov.
187474-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon mensarum%Contr. U.S. Natl. Herb.%20: 380%1920%%%%%%Colorado (Northwestern U.S.A., Northern America)%tax. nov.
30012834-2%1.1.2.1%Scrophulariaceae%%N%Penstemon%%spec.%Hook.%%Hook.%Penstemon menziesii%Fl. Bor.-Amer. (Hooker)%2(pt. 9): 98%1838%nom. illeg. nom. superfl.%%%%%%nom. nov.
808188-1%1.5%Scrophulariaceae%%N%Penstemon%%spec.%Hook.%%Hook.%Penstemon menziesii%Fl. Bor.-Amer. (Hooker)%2(9): 98%1838%%%%%%%tax. nov.
187475-2%1.5%Scrophulariaceae%%N%Penstemon%%var.%Schelle in Beissn., Schelle & Zabel%%Schelle in Beissn., Schelle & Zabel%Penstemon menziesii var. crassifolius%Handb. Laubholzben. [Beissner & al.]%432%1903%%%%%%%tax. nov.
1066860-2%1.1.2.1.1.1%Scrophulariaceae%%N%Penstemon%%var.%(Greene) Piper%(Greene)%Piper%Penstemon menziesii var. davidsonii%%%%%%%%%%unknown
187476-2%1.1.5.1.1.1%Scrophulariaceae%%N%Penstemon%%subsp.%Piper%%Piper%Penstemon menziesii subsp. davidsonii%Contr. U.S. Natl. Herb.%11: 499%1906%%%%%%%tax. nov.
187477-2%1.3%Scrophulariaceae%%N%Penstemon%%f.%G.N.Jones%%G.N.Jones%Penstemon menziesii f. davidsonii%Univ. Wash. Publ. Biol.%5: 226%1936%%%%%%%tax. nov.
187478-2%1.4%Scrophulariaceae%%N%Penstemon%%subsp.%(Greene) Pennell & D.D.Keck%(Greene)%Pennell & D.D.Keck%Penstemon menziesii subsp. davidsonii%Publ. Carnegie Inst. Wash.%520: 295%1940%%%%%%%tax. nov.
187479-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(Hook.) A.Gray%(Hook.)%A.Gray%Penstemon menziesii var. douglasii%Proc. Amer. Acad. Arts%6: 57%1862%%%%%%%tax. nov.
187480-2%1.6%Scrophulariaceae%%N%Penstemon%%f.%(Hook.) Voss in Vilm.%(Hook.)%Voss in Vilm.%Penstemon menziesii f. douglasii%Vilm. Blumengärtn., ed. 3.%1: 765%1894%%%%%%%tax. nov.
187481-2%1.5%Scrophulariaceae%%N%Penstemon%%var.%(Benth. ex DC.) A.Gray%(Benth. ex DC.)%A.Gray%Penstemon menziesii var. lewisii%Proc. Amer. Acad. Arts%6: 56%1862%%%%%%%tax. nov.
318346-2%1.2.2.1.1.1%Scrophulariaceae%%N%Penstemon%%var.%A.Gray%%A.Gray%Penstemon menziesii var. lyallii%Proc. Amer. Acad. Arts%6: 76%1862%%%%%%Between Fort Colville and the Rocky Mountains, United States of America (Northern America)%tax. nov.
187482-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%A.Gray%%A.Gray%Penstemon menziesii var. newberryi%Proc. Amer. Acad. Arts%6: 57%1862%%%%%%%tax. nov.
187483-2%1.6%Scrophulariaceae%%N%Penstemon%%f.%(A.Gray) Voss in Vilm.%(A.Gray)%Voss in Vilm.%Penstemon menziesii f. newberryi%Vilm. Blumengärtn., ed. 3.%1: 765%1894%%%%%%%tax. nov.
187484-2%1.5%Scrophulariaceae%%N%Penstemon%%var.%Schelle in Beissn., Schelle & Zabel%%Schelle in Beissn., Schelle & Zabel%Penstemon menziesii var. peduncularis%Handb. Laubholzben. [Beissner & al.]%432%1903%%%%%%%tax. nov.
187485-2%1.4.2.1.1.1%Scrophulariaceae%%N%Penstemon%%var.%(Lindl.) A.Gray%(Lindl.)%A.Gray%Penstemon menziesii var. scouleri%Proc. Amer. Acad. Arts%6: 57%1862%%Gray treated the older name P. scouleri Lindl. (1829) as a variety of P. menziesi Hook. (1838)%Scrophulariaceae Penstemon scouleri Lindl.%%%%comb. et stat. nov.
187486-2%1.6.2.1.1.1%Scrophulariaceae%%N%Penstemon%%f.%(Lindl.) Voss%(Lindl.)%Voss%Penstemon menziesii f. scouleri%Vilm. Blumengärtn., ed. 3.%1: 765%1894%%Voss treated the older name P. scouleri Lindl. (1829) as a form of P. menziesi Hook. (1838)%Scrophulariaceae Penstemon scouleri Lindl.%%%%comb. et stat. nov.
187487-2%1.4%Scrophulariaceae%%N%Penstemon%%subsp.%Pennell & D.D.Keck in Abrams%%Pennell & D.D.Keck in Abrams%Penstemon menziesii subsp. thompsonii%Ill. Fl. Pacific States%3: 768%1951%%%%%%Washington (Northwestern U.S.A., Northern America)%tax. nov.
187488-2%1.5%Scrophulariaceae%%N%Penstemon%%spec.%Wooton & Standl.%%Wooton & Standl.%Penstemon metcalfei%Torreya%9: 145%1909%%%%%%%tax. nov.
77329377-1%1.1%Scrophulariaceae%%N%Penstemon%%spec.%Hort. Angl. ex A.Cels%%Hort. Angl. ex A.Cels%Penstemon mexicanus%Ann. Fl. Pomone%ser. 2, 2: 221%1844%%%%%%%tax. nov.
808190-1%1.6.2.1%Scrophulariaceae%%N%Penstemon%%spec.%Hort ex A.DC.%%Hort ex A.DC.%Penstemon mexicanus%Prodr. [A. P. de Candolle]%10: 331, in nota%1846%pro syn.    of Tetranema mexicanum Benth.%%%%%%tax. nov.
808191-1%1.2%Scrophulariaceae%%N%Penstemon%%spec.%Torr.%%Torr.%Penstemon micranthus%in Frem. Rep.%89%%%%%%%%unknown
808192-1%1.6%Scrophulariaceae%%N%Penstemon%%spec.%Nutt.%%Nutt.%Penstemon micranthus%J. Acad. Nat. Sci. Philadelphia%vii. (1834) 45%%%%%%%%unknown
311877-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon microphyllus%Pacif. Railr. Rep. Parke, Bot.%4(5): 119%1857%%%%%%Arizona (Southwestern U.S.A., Northern America)%tax. nov.
187493-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon militaris%Leafl. Bot. Observ. Crit.%1: 166%1906%%%%%%Idaho (Northwestern U.S.A., Northern America)%tax. nov.
30306431-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Lindl.%%Lindl.%Penstemon miniatus%Edwards's Bot. Reg.%33: t. 14%1847%%%%%%Mexico (Northern America)%tax. nov.
187491-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(Straw) Straw%(Straw)%Straw%Penstemon miniatus subsp. apateticus%Brittonia%36: 67%1984%%%%%%%tax. nov.
77162268-1%1.3%Scrophulariaceae%%N%Penstemon%%var.%(Straw) C.C.Freeman%(Straw)%C.C.Freeman%Penstemon miniatus var. apateticus%PhytoKeys%80: 36%2017%%doi:10.3897/phytokeys.80.12962%Scrophulariaceae Penstemon apateticus Straw%%%%stat. nov.
187492-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(Straw) Straw%(Straw)%Straw%Penstemon miniatus subsp. townsendianus%Brittonia%36: 67%1984%%%%%%%tax. nov.
77162269-1%1.3%Scrophulariaceae%%N%Penstemon%%var.%(Straw) C.C.Freeman%(Straw)%C.C.Freeman%Penstemon miniatus var. townsendianus%PhytoKeys%80: 36%2017%%doi:10.3897/phytokeys.80.12962%Scrophulariaceae Penstemon apateticus  subsp. townsendianus Straw%%%%comb. et stat. nov.
187494-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson & J.F.Macbr.%%A.Nelson & J.F.Macbr.%Penstemon minidokanus%Bot. Gaz.%62: 147%1916%%%%%%Idaho (Northwestern U.S.A., Northern America)%tax. nov.
187495-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%(A.Gray) D.D.Keck%(A.Gray)%D.D.Keck%Penstemon minor%Publ. Carnegie Inst. Wash.%520: 295%1940%%%%%%%tax. nov.
187496-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon mirus%Amer. J. Bot.%25: 116%1938%%%%%%Arizona (Southwestern U.S.A., Northern America)%tax. nov.
187497-2%1.2%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon miser%Syn. Fl. N. Amer., ed.  2.%2(1): 441%1886%%%%%%Oregon (Northwestern U.S.A., Northern America)%tax. nov.
187498-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon modestus%Leafl. Bot. Observ. Crit.%1: 165%1906%%%%%%Nevada (Southwestern U.S.A., Northern America)%tax. nov.
187499-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Eastw.%%Eastw.%Penstemon moffatii%Zoe%4: 9%1893%%%%%%Colorado (Northwestern U.S.A., Northern America)%tax. nov.
187500-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon moffatii subsp. marcusii%Bull. Torrey Bot. Club%65: 243%1938%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
187501-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(Pennell) D.D.Keck%(Pennell)%D.D.Keck%Penstemon moffatii subsp. paysonii%Bull. Torrey Bot. Club%65: 243%1938%%%%%%%tax. nov.
187502-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon moffatii subsp. typicus%Bull. Torrey Bot. Club%65: 242%1938%%%%%%%tax. nov.
187503-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Straw%%Straw%Penstemon mohinoranus%Bol. Soc. Bot. México%no. 27: 15%1962%%%%%%Chihuahua (Mexico, Northern America)%tax. nov.
187504-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%A.Heller%%A.Heller%Penstemon monoensis%Muhlenbergia%2: 246%1906%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187505-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon montanus%Pittonia%2(11): 240%1892%%%%%%Yellowstone Park, United States of America (Northern America)%tax. nov.
187506-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon montanus subsp. idahoensis%Brittonia%8: 247%1957%%%%%%Idaho (Northwestern U.S.A., Northern America)%tax. nov.
187507-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(D.D.Keck) Cronquist%(D.D.Keck)%Cronquist%Penstemon montanus var. idahoensis%Vasc. Pl. Pacif. N. W. [C.L. Hitchcock & al.]%4: 394%1959%%%%%%%tax. nov.
187508-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%N.H.Holmgren%%N.H.Holmgren%Penstemon moriahensis%Brittonia%30: 422 (-424), fig%1978%%%%%%Nevada (Southwestern U.S.A., Northern America)%tax. nov.
187509-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Crosswh.%%Crosswh.%Penstemon moronensis%Sida%3: 266%1966%%%%%%Zacatecas (Mexico, Northern America)%tax. nov.
282311-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%N.H.Holmgren%%N.H.Holmgren%Penstemon mucronatus%Brittonia%31: 234 (-236), fig%1979%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
187511-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon multicaulis%Proc. Acad. Nat. Sci. Philadelphia%73: 494%1922%%%%%%Arkansas (Southeastern U.S.A., Northern America)%tax. nov.
187512-2%1.3.2.1.1.1%Scrophulariaceae%%N%Penstemon%%spec.%(Benth.) Chapm. ex Small%(Benth.)%Chapm. ex Small%Penstemon multiflorus%Fl. S.E. U.S. [Small].%1061%1903%%%Scrophulariaceae Penstemon pubescens Aiton var. multiflorus Benth.%%%%comb. et stat. nov.
808201-1%1.1.2.1.1.4.2.1.1.2%Scrophulariaceae%%N%Penstemon%%spec.%Chapm. ex Benth.%%Chapm. ex Benth.%Penstemon multiflorus%Prodr. [A. P. de Candolle]%10: 327%1846%nom. inval.    pro syn. of P. pubescens var. multiflorus Benth. (1846).%%%%%%tax. nov.
187513-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%I.M.Johnst.%%I.M.Johnst.%Penstemon munzii%Bull. Torrey Bot. Club%49: 40%1922%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
808202-1%1.5%Scrophulariaceae%%N%Penstemon%%spec.%Hook.%%Hook.%Penstemon murrayanus%Bot. Mag.%63: t. 3472%1836%%%%%%%unknown
187514-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%D.D.Keck%%D.D.Keck%Penstemon nanus%Amer. Midl. Naturalist%23: 607%1940%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
187515-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%N.H.Holmgren%%N.H.Holmgren%Penstemon navajoa%Brittonia%30: 419 (-421), fig%1978%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
187516-2%1.5%Scrophulariaceae%%N%Penstemon%%spec.%D.D.Keck & J.W.Thomps.%%D.D.Keck & J.W.Thomps.%Penstemon nelsoniae%Rhodora%37: 419%1935%%%%%%Washington (Northwestern U.S.A., Northern America)%tax. nov.
808203-1%1.6%Scrophulariaceae%%N%Penstemon%%spec.%Trautv.%%Trautv.%Penstemon nemorosus%Bull. Sci. Acad. Imp. Sci. Saint-Pétersbourg%v. (1839) 345%%%%%%%%unknown
187517-2%1.5%Scrophulariaceae%%N%Penstemon%%spec.%Wooton & Standl.%%Wooton & Standl.%Penstemon neomexicanus%Contr. U.S. Natl. Herb.%16: 172%1913%%%%%%New Mexico (South-Central U.S.A., Northern America)%tax. nov.
187606-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%D.D.Keck%%D.D.Keck%Penstemon neotericus%Univ. Calif. Publ. Bot.%16: 398, fig. 13%1932%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
808205-1%1.5%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon newberryi%Pacif. Railr. Rep.%vi. 82%%%%%%%%unknown
187608-2%1.5%Scrophulariaceae%%N%Penstemon%%subsp.%(Eastw.) D.D.Keck in Abrams%(Eastw.)%D.D.Keck in Abrams%Penstemon newberryi subsp. berryi%Ill. Fl. Pacific States%3: 768%1951%%%%%%%tax. nov.
970362-1%1.1.2.1.1.6%Scrophulariaceae%%N%Penstemon%%var.%(Eastw.) N.H.Holmgren%(Eastw.)%N.H.Holmgren%Penstemon newberryi var. berryi%Brittonia%44(4): 482%1992%%%Scrophulariaceae Penstemon berryi%%%%comb. nov.
187609-2%1.3%Scrophulariaceae%%N%Penstemon%%f.%Sealy%%Sealy%Penstemon newberryi f. humilior%Bot. Mag.%165: t. 4%1948%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187610-2%1.1.2.1.1.1%Scrophulariaceae%%N%Penstemon%%var.%Piper%%Piper%Penstemon newberryi var. rupicola%Bull. Torrey Bot. Club%27: 397%1900%%%%%%Washington (Northwestern U.S.A., Northern America)%tax. nov.
187611-2%1.5%Scrophulariaceae%%N%Penstemon%%subsp.%(Greene) D.D.Keck in Abrams%(Greene)%D.D.Keck in Abrams%Penstemon newberryi subsp. sonomensis%Ill. Fl. Pacific States%3: 768%1951%%%%%%%tax. nov.
187612-2%1.2.2.1%Scrophulariaceae%%N%Penstemon%%var.%(Greene) Jeps.%(Greene)%Jeps.%Penstemon newberryi var. sonomensis%Fl. W. Calif. [Jepson]%401%1901%%%%%%%tax. nov.
30039944-2%1.1.2.1%Scrophulariaceae%%N%Penstemon%%spec.%Douglas ex Benth.%%Douglas ex Benth.%Penstemon nitidus%Prodr. [A. P. de Candolle]%10: 323%1846%%%%%%Canada%tax. nov.
808206-1%1.1.2.1.1.6%Scrophulariaceae%%N%Penstemon%%spec.%Douglas ex Benth.%%Douglas ex Benth.%Penstemon nitidus%Prodr. [A. P. de Candolle]%10: 323%1846%%%%%%%unknown
187613-2%1.4.1.2%Scrophulariaceae%%N%Penstemon%%var.%Benth.%%Benth.%Penstemon nitidus var. major%Prodr. [A. P. de Candolle]%10: 323%1846%%%%%%Rocky Mts%tax. nov.
187614-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%Pennell%%Pennell%Penstemon nitidus subsp. polyphyllus%Notul. Nat. Acad. Nat. Sci. Philadelphia%no. 95: 6%1942%%%%%%Montana (Northwestern U.S.A., Northern America)%tax. nov.
187615-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(Pennell) Cronquist%(Pennell)%Cronquist%Penstemon nitidus var. polyphyllus%Vasc. Pl. Pacif. N. W. [C.L. Hitchcock & al.]%4: 395%1959%%%%%%%tax. nov.
187616-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%Pennell%%Pennell%Penstemon nitidus subsp. typicus%Notul. Nat. Acad. Nat. Sci. Philadelphia%95: 6%1942%%%%%%%tax. nov.
808207-1%1.4%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon nudiflorus%Proc. Amer. Acad. Arts%xx. (1885) 206.%%%%%%%%unknown
808208-1%1.5%Scrophulariaceae%%N%Penstemon%%spec.%L.C.Beck%%L.C.Beck%Penstemon nuttallii%Amer. J. Sci. Arts%14: 120%1828%%%%%%%unknown
187617-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Crosswh.%%Crosswh.%Penstemon nyeensis%Leafl. W. Bot.%10: 171%1965%%%%%%Nevada (Southwestern U.S.A., Northern America)%tax. nov.
187618-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon obtusifolius%Contr. U.S. Natl. Herb.%20: 370%1920%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
187619-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Straw%%Straw%Penstemon occiduus%Bol. Soc. Bot. México%no. 27: 7%1962%%%%%%Chihuahua (Mexico, Northern America)%tax. nov.
187620-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon oklahomensis%Monogr.  Acad.  Nat.  Sci.  Philadelphia%1: 237%1935%%%%%%Oklahoma (North-Central U.S.A., Northern America)%tax. nov.
187621-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Wooton & Standl.%%Wooton & Standl.%Penstemon oliganthus%Contr. U.S. Natl. Herb.%1: 172%1913%%%%%%New Mexico (South-Central U.S.A., Northern America)%tax. nov.
808210-1%1.1.2.1.1.4%Scrophulariaceae%%N%Penstemon%%spec.%Wooton & Standl.%%Wooton & Standl.%Penstemon oliganthus%Contr. U.S. Natl. Herb.%xvi. 172 (1913)%%%%%%%%unknown
187622-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon ophianthus%Contr. U.S. Natl. Herb.%20: 343%1920%%%%%%Colorado & Utah, United States of America (Northern America)%tax. nov.
187623-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Howell%%Howell%Penstemon oreganus%Fl. N.W. Amer. [Howell]%1: 515%1901%%%%%%%tax. nov.
808213-1%1.2.2.1%Scrophulariaceae%%N%Penstemon%%spec.%A.Murray bis%%A.Murray bis%Penstemon oregonensis%Circ. Oreg. Comm.%2.%%%%%%%%unknown
282312-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon oreocharis%Leafl. Bot. Observ. Crit.%1: 163%1906%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187625-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Rydb.%%Rydb.%Penstemon oreophilus%Bull. Torrey Bot. Club%31: 642%1905%%%%%%Colorado (Northwestern U.S.A., Northern America)%tax. nov.
187626-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon osterhoutii%Contr. U.S. Natl. Herb.%20: 358%1920%%%%%%Colorado (Northwestern U.S.A., Northern America)%tax. nov.
808217-1%1.5%Scrophulariaceae%%N%Penstemon%%spec.%Douglas%%Douglas%Penstemon ovatus%Bot. Mag.%56: t. 2903%1829%%%%%%%unknown
187627-2%1.1.2.1.1.2%Scrophulariaceae%%N%Penstemon%%var.%Piper in Piper & Beattie%%Piper in Piper & Beattie%Penstemon ovatus var. pinetorum%Fl. Palouse Reg. [Piper & Beattie]%158%1901%%%%%%Washington (Northwestern U.S.A., Northern America)%tax. nov.
187628-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon owenii%Bot. Gaz.%34: 32%1902%%%%%%Wyoming (Northwestern U.S.A., Northern America)%tax. nov.
808219-1%1.6%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray ex Rydb.%%A.Gray ex Rydb.%Penstemon pachyphyllus%Fl. Rocky Mts.%770%1917%%%%%%%unknown
187629-2%1.1.1.4%Scrophulariaceae%%N%Penstemon%%var.%(Jones) N.H.Holmgren%(Jones)%N.H.Holmgren%Penstemon pachyphyllus var. congestus%Brittonia%31: 105%1979%%%%%%%tax. nov.
187630-2%1.1.2.1.1.3.2.1.1.1%Scrophulariaceae%%N%Penstemon%%subsp.%(M.E.Jones) D.D.Keck%(M.E.Jones)%D.D.Keck%Penstemon pachyphyllus subsp. congestus%J. Wash. Acad. Sci.%29: 490%1939%%%Scrophulariaceae Penstemon acuminatus Douglas ex Lindl. var. congestus M.E.Jones%%%%comb. et stat. nov.
282313-2%1.4%Scrophulariaceae%%N%Penstemon%%var.%(N.H.Holmgren) Neese%(N.H.Holmgren)%Neese%Penstemon pachyphyllus var. mucronatus%Great Basin Naturalist%46: 460%1986%%%%%%%tax. nov.
187631-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%N.H.Holmgren%%N.H.Holmgren%Penstemon pahutensis%Aliso%7: 351, fig. 1%1971%%%%%%Nevada (Southwestern U.S.A., Northern America)%tax. nov.
187632-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Osterh.%%Osterh.%Penstemon pallescens%Bull. Torrey Bot. Club%57: 559%1931%%%%%%Colorado (Northwestern U.S.A., Northern America)%tax. nov.
187633-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Small%%Small%Penstemon pallidus%Fl. S.E. U.S. [Small].%1060, 1337%1903%%%%%%New York (Northeastern U.S.A., Northern America)%tax. nov.
187634-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(Pennell) R.W.Benn.%(Pennell)%R.W.Benn.%Penstemon pallidus subsp. arkansanus%Phytologia%9: 57%1963%%%%%%%tax. nov.
808221-1%1.4%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon palmeri%Proc. Amer. Acad. Arts%vii. (1868) 379.%%%%%%%%unknown
187635-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%Brandegee%%Brandegee%Penstemon palmeri var. bicolor%Univ. Calif. Publ. Bot.%6: 360%1916%%%%%%Nevada (Southwestern U.S.A., Northern America)%tax. nov.
187636-2%1.4%Scrophulariaceae%%N%Penstemon%%var.%(D.D.Keck) N.H.Holmgren%(D.D.Keck)%N.H.Holmgren%Penstemon palmeri var. eglandulosus%Brittonia%31: 105%1979%%%%%%%tax. nov.
187637-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon palmeri subsp. eglandulosus%Amer. Midl. Naturalist%18: 797%1937%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
187638-2%1.4%Scrophulariaceae%%N%Penstemon%%var.%Munz & I.M.Johnst.%%Munz & I.M.Johnst.%Penstemon palmeri var. grinnellii%Bull. Torrey Bot. Club%49: 42%1922%%%%%%%tax. nov.
187639-2%1.4%Scrophulariaceae%%N%Penstemon%%var.%(Eastw.) N.H.Holmgren%(Eastw.)%N.H.Holmgren%Penstemon palmeri var. macranthus%Brittonia%31: 105%1979%%%%%%%tax. nov.
187640-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon palmeri subsp. typicus%Amer. Midl. Naturalist%18: 795%1937%%%%%%%tax. nov.
187641-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon palustris%Notul. Nat. Acad. Nat. Sci. Philadelphia%no. 71: 8%1941%%%%%%Oregon (Northwestern U.S.A., Northern America)%tax. nov.
187642-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson & J.F.Macbr.%%A.Nelson & J.F.Macbr.%Penstemon pandus%Bot. Gaz.%65: 69%1918%%%%%%%tax. nov.
187643-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Howell%%Howell%Penstemon paniculatus%Fl. N.W. Amer. [Howell]%1: 513%1901%%%%%%Oregon (Northwestern U.S.A., Northern America)%tax. nov.
187644-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%J.T.Howell%%J.T.Howell%Penstemon papillatus%Leafl. W. Bot.%2: 119%1938%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
807929-1%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Davidson%%Davidson%Penstemon parishii%Bull. S. Calif. Acad. Sci.%1: 141, hybr.%1902%%%%%%%unknown
808224-1%1.4%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon parishii%Proc. Amer. Acad. Arts%xvii. (1881-82) 228.%%%%%%%%unknown
808225-1%1.5%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon parryi%Syn. Fl. N. Amer.%2(1): 264%1878%%%%%%%unknown
187645-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon parviflorus%Contr. U.S. Natl. Herb.%20: 340%1920%%%%%%Colorado (Northwestern U.S.A., Northern America)%tax. nov.
187646-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Krautter%%Krautter%Penstemon parvulus%Contr. Bot. Lab. Morris Arbor. Univ. Pennsylvania%3: 193%1908%%%%%%%tax. nov.
808228-1%1.5%Scrophulariaceae%%N%Penstemon%%spec.%Krautter%%Krautter%Penstemon parvulus%Trans. & Proc. Bot. Soc. Pennsylvania%ii. 193 (1911)%%%%%%%%unknown
187647-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon parvus%Contr. U.S. Natl. Herb.%20: 345%1920%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
187648-2%1.1.1.3%Scrophulariaceae%%N%Penstemon%%spec.%(Jones) N.H.Holmgren%(Jones)%N.H.Holmgren%Penstemon patens%Brittonia%31: 106%1979%%%%%%%tax. nov.
282314-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%N.H.Holmgren%%N.H.Holmgren%Penstemon patricus%Brittonia%31: 238 (-239), fig%1979%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
808230-1%1.4.2.1.1.1%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon pauciflorus%Bot. Gaz.%6: 218%1881%%%%%%%unknown
808231-1%1.5%Scrophulariaceae%%N%Penstemon%%spec.%Buckley%%Buckley%Penstemon pauciflorus%Proc. Acad. Nat. Sci. Philadelphia%1861 (1862) 461%%%%%%%%unknown
187651-2%1.5%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson & J.F.Macbr.%%A.Nelson & J.F.Macbr.%Penstemon payettensis%Bot. Gaz.%62: 147%1916%%%%%%Idaho (Northwestern U.S.A., Northern America)%tax. nov.
187652-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon paysonii%Contr. U.S. Natl. Herb.%20: 342%1920%%%%%%Colorado (Northwestern U.S.A., Northern America)%tax. nov.
187653-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%D.D.Keck%%D.D.Keck%Penstemon paysoniorum%Leafl. W. Bot.%5: 57%1947%%%%%%Wyoming (Northwestern U.S.A., Northern America)%tax. nov.
187654-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon peckii%Notul. Nat. Acad. Nat. Sci. Philadelphia%71: 12%1941%%%%%%Oregon (Northwestern U.S.A., Northern America)%tax. nov.
808234-1%1.1.2.1.1.7%Scrophulariaceae%%N%Penstemon%%spec.%Nutt. ex A.DC.%%Nutt. ex A.DC.%Penstemon peduncularis%Prodr. [A. P. de Candolle]%10: 593%1846%%%%%%%unknown
187656-2%1.5%Scrophulariaceae%%N%Penstemon%%spec.%Munz & I.M.Johnst.%%Munz & I.M.Johnst.%Penstemon peirsonii%Bull. Torrey Bot. Club%52: 225%1925%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
282315-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%W.A.Weber%%W.A.Weber%Penstemon penlandii%Phytologia%60: 459 (-460)%1986%%%%%%Colorado (Northwestern U.S.A., Northern America)%tax. nov.
187657-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%D.D.Keck%%D.D.Keck%Penstemon pennellianus%Amer. Midl. Naturalist%23: 614%1940%%%%%%Washington & Oregon, United States of America (Northern America)%tax. nov.
187658-2%1.5%Scrophulariaceae%%N%Penstemon%%spec.%(L.) MacMill.%(L.)%MacMill.%Penstemon pentstemon%Bull. Torrey Bot. Club%19(1): 15%1892%%%%%%%tax. nov.
808236-1%1.6%Scrophulariaceae%%N%Penstemon%%spec.%Al.Brongn.%%Al.Brongn.%Penstemon perfoliatus%Hort. Universel%5: 256%1844%%; ex Benth. in DC. Prod. x. 326%%%%%tax. nov.
187659-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon perpulcher%Bot. Gaz.%52: 273%1911%%%%%%Idaho (Northwestern U.S.A., Northern America)%tax. nov.
187660-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%A.Nelson & J.F.Macbr.%%A.Nelson & J.F.Macbr.%Penstemon perpulcher var. pandus%Bot. Gaz.%55: 382%1913%%%%%%Idaho (Northwestern U.S.A., Northern America)%tax. nov.
187661-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%D.D.Keck%%D.D.Keck%Penstemon personatus%Madroño%3: 248%1936%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187662-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Brandegee%%Brandegee%Penstemon petiolatus%Bot. Gaz.%27: 455%1899%%%%%%Nevada (Southwestern U.S.A., Northern America)%tax. nov.
187663-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon phlogifolius%Leafl. Bot. Observ. Crit.%1: 164%1906%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
187664-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%H.St.John%%H.St.John%Penstemon pickettii%Proc. Biol. Soc. Washington%44: 33%1931%%%%%%Washington (Northwestern U.S.A., Northern America)%tax. nov.
187665-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%A.Heller%%A.Heller%Penstemon piliferus%Muhlenbergia%2: 136%1906%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187666-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon pilosigulatus%Univ. Wyoming Publ. Sci., Bot.%1: 130%1926%%%%%%Arizona (Southwestern U.S.A., Northern America)%tax. nov.
187667-2%1.1.2.1.1.2%Scrophulariaceae%%N%Penstemon%%spec.%Piper%%Piper%Penstemon pinetorum%Contr. U.S. Natl. Herb.%11: 500%1906%%%%%%%tax. nov.
808242-1%1.4.2.1%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon pinifolius%Bot. Gaz.%6: 218%1881%%%%%%Arizona%unknown
282316-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%L.M.Shultz & J.S.Shultz%%L.M.Shultz & J.S.Shultz%Penstemon pinorum%Brittonia%37: 98, fig%1985%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
187668-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Straw%%Straw%Penstemon plagapineus%Bol. Soc. Bot. México%no. 27: 19%1962%%%%%%Durango, Sinaloa, Nayarit, Mexico (Northern America)%tax. nov.
187669-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Rydb.%%Rydb.%Penstemon platyphyllus%Bull. Torrey Bot. Club%36: 690%1909%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
187670-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Abrams%%Abrams%Penstemon plummerae%Bull. Torrey Bot. Club%33: 445%1909%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
808245-1%1.1.2.1.1.4%Scrophulariaceae%%N%Penstemon%%spec.%hort.%%hort.%Penstemon pononi%Gard. Chron.%1872: 733%1872%%%%%%%unknown
187671-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Straw%%Straw%Penstemon potosinus%Brittonia%15: 62%1963%%%%%%San Luis Potosi & Guanajuato, Mexico (Northern America)%tax. nov.
187672-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon pratensis%Leafl. Bot. Observ. Crit.%1: 165%1906%%%%%%Nevada (Southwestern U.S.A., Northern America)%tax. nov.
187673-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%S.Watson%%S.Watson%Penstemon pringlei%Proc. Amer. Acad. Arts%23: 281%1888%%%%%%Mexico (Northern America)%tax. nov.
808248-1%1.1.2.2.1.5%Scrophulariaceae%%N%Penstemon%%spec.%Douglas ex Graham%%Douglas ex Graham%Penstemon procerus%Edinburgh New Philos. J.%(July-Oct. 1829) 348%%%%%%%%unknown
187675-2%1.1.2.1.1.1%Scrophulariaceae%%N%Penstemon%%subsp.%(M.E.Jones) D.D.Keck%(M.E.Jones)%D.D.Keck%Penstemon procerus subsp. aberrans%Amer. Midl. Naturalist%33: 146%1945%%%%%%%tax. nov.
187676-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%A.Nelson%%A.Nelson%Penstemon procerus var. aberrans%Bot. Gaz.%54: 146%1912%%%%%%%tax. nov.
187687-2%1.2%Scrophulariaceae%%N%Penstemon%%f.%B.Boivin%%B.Boivin%Penstemon procerus f. albescens%Naturaliste Canad.%93: 1062%1967%%%%%%Yukon Territory (Canada)%tax. nov.
187677-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(Pennell) D.D.Keck%(Pennell)%D.D.Keck%Penstemon procerus subsp. brachyanthus%Brittonia%8: 249%1957%%%%%%%tax. nov.
187678-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(Pennell) Cronquist%(Pennell)%Cronquist%Penstemon procerus var. brachyanthus%Vasc. Pl. Pacif. N. W. [C.L. Hitchcock & al.]%4: 398%1959%%%%%%%tax. nov.
187679-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%Regel%%Regel%Penstemon procerus var. fimbriatus%Gartenflora%21: 241%1872%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187680-2%1.3.2.1%Scrophulariaceae%%N%Penstemon%%subsp.%(D.D.Keck) D.D.Keck%(D.D.Keck)%D.D.Keck%Penstemon procerus subsp. formosus%Brittonia%8: 249%1957%%%Scrophulariaceae Penstemon tolmiei Hook. subsp. formosus D.D.Keck%%%%comb. et stat. nov.
187681-2%1.3.2.1%Scrophulariaceae%%N%Penstemon%%var.%(D.D.Keck) Cronquist%(D.D.Keck)%Cronquist%Penstemon procerus var. formosus%Vasc. Pl. Pacif. N. W. [C.L. Hitchcock & al.]%4: 398%1959%%%Scrophulariaceae Penstemon tolmiei Hook. subsp. formosus D.D.Keck%%%%comb. et stat. nov.
187682-2%1.2%Scrophulariaceae%%N%Penstemon%%f.%Smiley%%Smiley%Penstemon procerus f. geniculatus%Univ. Calif. Publ. Bot.%9: 325%1921%%%%%%%tax. nov.
187683-2%1.2%Scrophulariaceae%%N%Penstemon%%f.%B.Boivin%%B.Boivin%Penstemon procerus f. jenkinsii%Naturaliste Canad.%87: 43%1960%%%%%%Saskatchewan (Western Canada, Northern America)%tax. nov.
187684-2%1.1.2.1%Scrophulariaceae%%N%Penstemon%%var.%M.E.Jones%%M.E.Jones%Penstemon procerus var. micrantus%Bull. Montana State Univ., Biol. Ser.%ser. 15: 45%1910%%%%%%%tax. nov.
187685-2%1.4%Scrophulariaceae%%N%Penstemon%%var.%(Greene) N.H.Holmgren%(Greene)%N.H.Holmgren%Penstemon procerus var. modestus%Brittonia%31: 106%1979%%%%%%%tax. nov.
187686-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(Greene) D.D.Keck%(Greene)%D.D.Keck%Penstemon procerus subsp. modestus%Brittonia%8: 249%1957%%%%%%%tax. nov.
187688-2%1.4%Scrophulariaceae%%N%Penstemon%%var.%A.Nelson in J.M.Coult. & A.Nelson%%A.Nelson in J.M.Coult. & A.Nelson%Penstemon procerus var. pseudoprocerus%New Man. Bot. Centr. Rocky Mt.%444%1909%%%%%%%tax. nov.
187689-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%Pennell%%Pennell%Penstemon procerus subsp. pulvereus%Contr. U.S. Natl. Herb.%20: 366%1920%%%%%%Wyoming, Idaho, United States of America (Northern America)%tax. nov.
187690-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(Hook.) D.D.Keck%(Hook.)%D.D.Keck%Penstemon procerus subsp. tolmiei%Brittonia%8: 249%1957%%%%%%%tax. nov.
187691-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(Hook.) Cronquist%(Hook.)%Cronquist%Penstemon procerus var. tolmiei%Vasc. Pl. Pacif. N. W. [C.L. Hitchcock & al.]%4: 398%1959%%%%%%%tax. nov.
187692-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon procerus subsp. typicus%Amer. Midl. Naturalist%33: 144%1945%%%%%%%tax. nov.
187693-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon procumbens%Pl. Baker. [Greene]%3: 23%1901%%%%%%Colorado (Northwestern U.S.A., Northern America)%tax. nov.
187694-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon productus%Leafl. Bot. Observ. Crit.%1: 166%1906%%%%%%Oregon (Northwestern U.S.A., Northern America)%tax. nov.
187695-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon propinquus%Leafl. Bot. Observ. Crit.%1: 166%1906%%%%%%Oregon (Northwestern U.S.A., Northern America)%tax. nov.
808252-1%1.3.2.2.1.1%Scrophulariaceae%%N%Penstemon%%spec.%Douglas%%Douglas%Penstemon pruinosus%Edwards's Bot. Reg.%15: t. 1280%1829%%%%%%%unknown
187696-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Rydb.%%Rydb.%Penstemon pseudohumilis%Mem. New York Bot. Gard.%1: 347%1900%%%%%%Montana and Idaho, United States of America (Northern America)%tax. nov.
187697-2%1.1.2.1.1.2%Scrophulariaceae%%N%Penstemon%%spec.%M.E.Jones%%M.E.Jones%Penstemon pseudohumilis%Contr. W. Bot.%12: 65%1908%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
187698-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Crosswh.%%Crosswh.%Penstemon pseudoparvus%Amer. Midl. Naturalist%74: 431%1965%%%%%%New Mexico (South-Central U.S.A., Northern America)%tax. nov.
187699-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Rydb.%%Rydb.%Penstemon pseudoprocerus%Mem. New York Bot. Gard.%1: 346%1900%%%%%%Montana, Yellowstone Park & Idaho, United States of America (Northern America)%tax. nov.
187700-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%(Crosswh.) N.H.Holmgren%(Crosswh.)%N.H.Holmgren%Penstemon pseudoputus%Brittonia%31: 106%1979%%%%%%%tax. nov.
187701-2%1.1.2.1.1.2%Scrophulariaceae%%N%Penstemon%%spec.%M.E.Jones%%M.E.Jones%Penstemon pseudospectabilis%Contr. W. Bot.%12: 66%1908%%%%%%Arizona (Southwestern U.S.A., Northern America)%tax. nov.
187702-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(Brandegee) D.D.Keck%(Brandegee)%D.D.Keck%Penstemon pseudospectabilis subsp. bicolor%Amer. Midl. Naturalist%18: 806%1937%%%%%%%tax. nov.
187703-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(A.Nelson) D.D.Keck%(A.Nelson)%D.D.Keck%Penstemon pseudospectabilis subsp. clutei%Amer. Midl. Naturalist%18: 806%1937%%%%%%%tax. nov.
187704-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(A.Nelson) D.D.Keck%(A.Nelson)%D.D.Keck%Penstemon pseudospectabilis subsp. connatifolius%Amer. Midl. Naturalist%18: 807%1937%%%%%%%tax. nov.
77162270-1%1.3%Scrophulariaceae%%N%Penstemon%%var.%(A.Nelson) C.C.Freeman%(A.Nelson)%C.C.Freeman%Penstemon pseudospectabilis var. connatifolius%PhytoKeys%80: 37%2017%%doi:10.3897/phytokeys.80.12962%Scrophulariaceae Penstemon connatifolius A.Nelson%%%%stat. nov.
187705-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon pseudospectabilis subsp. typicus%Amer. Midl. Naturalist%18: 805%1937%%%%%%%tax. nov.
187706-2%1.2%Scrophulariaceae%%N%Penstemon%%spec.%Rydb.%%Rydb.%Penstemon puberulentus%Fl. Rocky Mts.%774, 1066%1917%%%%%%Idaho, Oregon, United States of America (Northern America)%tax. nov.
187707-2%1.1.2.1.1.1%Scrophulariaceae%%N%Penstemon%%spec.%M.E.Jones%%M.E.Jones%Penstemon puberulus%Contr. W. Bot.%12: 64%1908%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
290693-2%1.5%Scrophulariaceae%%N%Penstemon%%spec.%Wooton & Standl.%%Wooton & Standl.%Penstemon puberulus%Bull. Torrey Bot. Club%36: 112%1909%%%%%%New Mexico (South-Central U.S.A., Northern America)%tax. nov.
187708-2%1.2.1.1%Scrophulariaceae%%N%Penstemon%%spec.%Aiton%%Aiton%Penstemon pubescens%Hort. Kew. [W. Aiton]%2: 360%1789%%%%%%%nom. nov.
187709-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%Aiton%%Aiton%Penstemon pubescens var. angustifolius%Hort. Kew. [W. Aiton]%2: 360%1789%%%%%%North America%tax. nov.
187710-2%1.4%Scrophulariaceae%%N%Penstemon%%var.%(Nutt.) A.Gray%(Nutt.)%A.Gray%Penstemon pubescens var. gracilis%Proc. Amer. Acad. Arts%6: 69%1862%%%%%%%tax. nov.
187711-2%1.2.2.1.1.2%Scrophulariaceae%%N%Penstemon%%var.%Aiton%%Aiton%Penstemon pubescens var. latifolius%Hort. Kew. [W. Aiton]%2: 360%1789%%%%%%North America%tax. nov.
187712-2%1.4.2.1.1.2%Scrophulariaceae%%N%Penstemon%%var.%Benth.%%Benth.%Penstemon pubescens var. multiflorus%Prodr. [A. P. de Candolle]%10: 327%1846%%as Pentstemon%%%%Louisiana & Florida, United States of America (Northern America)%tax. nov.
187713-2%1.3.2.1.1.1%Scrophulariaceae%%N%Penstemon%%spec.%Reveal & Beatley%%Reveal & Beatley%Penstemon pudicus%Bull. Torrey Bot. Club%98(6): 332 (-334)%1972%%%%%%Nye County (Nevada, Southwestern U.S.A., Northern America)%tax. nov.
187715-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon pulchellus%Pittonia%3(18): 310%1898%%%%%%Oregon (Northwestern U.S.A., Northern America)%tax. nov.
808261-1%1.1.2.1.1.2.2.1.1.1%Scrophulariaceae%%N%Penstemon%%spec.%Lindl.%%Lindl.%Penstemon pulchellus%Bot. Reg.%14: t. 1138%1828%%%%%%%unknown
808263-1%1.5%Scrophulariaceae%%N%Penstemon%%spec.%Nutt.%%Nutt.%Penstemon pumilus%J. Acad. Nat. Sci. Philadelphia%vii. (1834) 46.%%%%%%%%unknown
187716-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%A.Gray%%A.Gray%Penstemon pumilus var. incanus%Syn. Fl. N. Amer.%2(1): 269%1878%%%%%%Nevada & Utah, United States of America (Northern America)%tax. nov.
187717-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%A.Gray%%A.Gray%Penstemon pumilus var. thompsoniae%Syn. Fl. N. Amer.%2(1): 269%1878%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
187718-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Brandegee%%Brandegee%Penstemon punctatus%Univ. Calif. Publ. Bot.%4: 189%1911%%%%%%Mexico (Northern America)%tax. nov.
808265-1%1.7%Scrophulariaceae%%N%Penstemon%%spec.%Lilja%%Lilja%Penstemon puniceus%Linnaea%17(1): 111%1843%%%%%%%unknown
808266-1%1.5%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon puniceus%Rep. U.S. Mex. Bound., Bot. [Emory]%113.%%%%%%%%unknown
187719-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%A.Gray%%A.Gray%Penstemon puniceus var. parryi%Rep. U.S. Mex. Bound., Bot. [Emory]%113%1858%%As Pentstemon%%%%Arizona (Southwestern U.S.A., Northern America)%tax. nov.
187720-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Brandegee%%Brandegee%Penstemon purpusii%Bot. Gaz.%27: 455%1899%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187721-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon putus%Univ. Wyoming Publ. Sci., Bot.%1: 131%1926%%%%%%Arizona (Southwestern U.S.A., Northern America)%tax. nov.
187722-2%1.5%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon radicosus%Bull. Torrey Bot. Club%25(5): 280%1898%%%%%%Wyoming (Northwestern U.S.A., Northern America)%tax. nov.
187723-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon ramaleyi%Univ. Wyoming Publ.%3: 106%1937%%%%%%Colorado (Northwestern U.S.A., Northern America)%tax. nov.
187724-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Crosswh.%%Crosswh.%Penstemon ramosus%Sida%2: 341%1966%%%%%%%tax. nov.
30025980-2%1.1.2.1%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon rattanii%%%%%in Proc. Amer. Acad. Arts 15: 50. 1879 [1 Oct 1879] (as Rattani) [preprint]%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
808269-1%1.5%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon rattanii%Proc. Amer. Acad. Arts%xv. (1880) 50.%%%%%%%%unknown
187725-2%1.4%Scrophulariaceae%%N%Penstemon%%subsp.%(Greene) D.D.Keck%(Greene)%D.D.Keck%Penstemon rattanii subsp. kleei%Publ. Carnegie Inst. Wash.%520: 295%1940%%%%%%%tax. nov.
187726-2%1.4%Scrophulariaceae%%N%Penstemon%%var.%A.Gray%%A.Gray%Penstemon rattanii var. kleei%Syn. Fl. N. Amer., ed.  2.%2(1): 441%1886%%%%%%%tax. nov.
187727-2%1.4%Scrophulariaceae%%N%Penstemon%%var.%A.Gray%%A.Gray%Penstemon rattanii var. minor%Proc. Amer. Acad. Arts%15: 51%1879%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187728-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon rattanii subsp. typicus%Publ. Carnegie Inst. Wash.%520: 294%1940%%%%%%%tax. nov.
187729-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%A.Heller%%A.Heller%Penstemon recurvatus%Muhlenbergia%2: 247%1906%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187730-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon regalis%Amer. J. Bot.%21: 578%1934%%%%%%New Mexico (South-Central U.S.A., Northern America)%tax. nov.
77193061-1%1.1%Scrophulariaceae%%N%Penstemon%%spec.%Zacarías & A.Wolfe%%Zacarías & A.Wolfe%Penstemon reidmoranii%Phytotaxa%387(1): 67%2019%%doi:10.11646/phytotaxa.387.1.5 Named for Dr. Reid Venable Moran.%%%%Baja California (Mexico Northwest, Mexico, Northern America)%tax. nov.
187731-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Payson%%Payson%Penstemon retrorsus%Contr. U.S. Natl. Herb.%20: 373%1920%%%%%%Colorado (Northwestern U.S.A., Northern America)%tax. nov.
187732-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson & J.F.Macbr.%%A.Nelson & J.F.Macbr.%Penstemon rex%Bot. Gaz.%55: 381%1913%%%%%%Nevada, Idaho, United States of America (Northern America)%tax. nov.
315925-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%N.H.Holmgren%%N.H.Holmgren%Penstemon rhizomatosus%Brittonia%50: 162, fig.%1998%%[Gandhi 13 Jul 1998]%%%%Schell Creek Range, Cave Mountain, S of the top (relay station), 24.5 km air distance SSE (114°) of Ely, T15N R66E S19, 39°9'N, 114°36'W, 3230 m, White Pine County (Nevada, Southwestern U.S.A., Northern America)%tax. nov.
808273-1%1.3.2.1.1.2%Scrophulariaceae%%N%Penstemon%%spec.%Douglas ex Lindl.%%Douglas ex Lindl.%Penstemon richardsonii%Bot. Reg.%13: t. 1121%1828%%%%%%%tax. nov.
187733-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon richardsonii subsp. curtiflorus%Brittonia%8: 249%1957%%%%%%Oregon (Northwestern U.S.A., Northern America)%tax. nov.
187734-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(D.D.Keck) Cronquist%(D.D.Keck)%Cronquist%Penstemon richardsonii var. curtiflorus%Vasc. Pl. Pacif. N. W. [C.L. Hitchcock & al.]%4: 401%1959%%%%%%%tax. nov.
187735-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon richardsonii subsp. dentatus%Brittonia%8: 250%1957%%%%%%Oregon (Northwestern U.S.A., Northern America)%tax. nov.
187736-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(D.D.Keck) Cronquist%(D.D.Keck)%Cronquist%Penstemon richardsonii var. dentatus%Vasc. Pl. Pacif. N. W. [C.L. Hitchcock & al.]%4: 401%1959%%%%%%%tax. nov.
187737-2%1.5%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon riparius%Bull. Torrey Bot. Club%25(7): 379%1898%%%%%%Wyoming (Northwestern U.S.A., Northern America)%tax. nov.
808275-1%1.1.2.1.1.5%Scrophulariaceae%%N%Penstemon%%spec.%Douglas ex Trautv.%%Douglas ex Trautv.%Penstemon rivularis%Bull. Sci. Acad. Imp. Sci. Saint-Pétersbourg%v. (1839) 346%%%%%%%%unknown
323252-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Regel%%Regel%Penstemon roezlii%Gartenflora%21: 239 (-240)%1872%%%%%%cultivated?, United States of America (Northern America)%tax. nov.
808276-1%1.1.2.1.1.4%Scrophulariaceae%%N%Penstemon%%spec.%Regel%%Regel%Penstemon roezlii%Gartenflora%(1872) 239.%%%%%%%%unknown
187739-2%1.4%Scrophulariaceae%%N%Penstemon%%var.%Brandegee%%Brandegee%Penstemon roezlii var. violaceus%Bot. Gaz.%27: 456%1899%%%%%%Nevada (Southwestern U.S.A., Northern America)%tax. nov.
808277-1%1.5%Scrophulariaceae%%N%Penstemon%%spec.%G.Don%%G.Don%Penstemon roseus%Hort. Brit. [Loudon]%243%1830%%%%%%%unknown
187741-2%1.3.2.1.1.1%Scrophulariaceae%%N%Penstemon%%spec.%Kellogg%%Kellogg%Penstemon rostriflorus%Hutchings' Ill. Calif. Mag.%5(3): 102, fig.%1860%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
808279-1%1.6%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon rothrockii%Syn. Fl. N. Amer.%2(1): 260%1878%%%%%%%unknown
1064944-2%1.4.2.2.1.1%Scrophulariaceae%%N%Penstemon%%var.%(Abrams) Munz & I.M.Johnst.%(Abrams)%Munz & I.M.Johnst.%Penstemon rothrockii var. jacintensis%Bull. S. Calif. Acad. Sci.%23: 27%1924%%%Scrophulariaceae Penstemon jacintensis Abrams%%%%comb. et stat. nov.
187743-2%1.2.2.2.1.1%Scrophulariaceae%%N%Penstemon%%subsp.%(Abrams) D.D.Keck%(Abrams)%D.D.Keck%Penstemon rothrockii subsp. jacintensis%Madroño%3: 204%1936%%%Scrophulariaceae Penstemon jacintensis Abrams%%%%comb. et stat. nov.
187745-2%1.2.2.1%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon rothrockii subsp. typicus%Madroño%3: 203%1936%%%%%%%tax. nov.
187746-2%1.2%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon rotundifolius%Proc. Amer. Acad. Arts%22: 307%1887%%%%%%Mexico (Northern America)%tax. nov.
808280-1%1.4%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon rotundifolius%Proc. Amer. Acad. Arts%xxii. (1887) 307; Dewar, in Gard. Chron. (1888) ii. 264 fig.31.%%%%%%%%unknown
808281-1%1.4%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon rubescens%Proc. Amer. Acad. Arts%xix. (1883) 92.%%%%%%%%unknown
187747-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%D.D.Keck%%D.D.Keck%Penstemon rubicundus%Amer. Midl. Naturalist%18: 802%1937%%%%%%Nevada (Southwestern U.S.A., Northern America)%tax. nov.
187748-2%1.3.2.1%Scrophulariaceae%%N%Penstemon%%spec.%(Piper) Howell%(Piper)%Howell%Penstemon rupicola%Fl. N.W. Amer. [Howell]%1: 510%1901%%%Scrophulariaceae Penstemon newberryi A.Gray var. rupicola Piper%%%%comb. et stat. nov.
187749-2%1.5%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon rydbergii%Bull. Torrey Bot. Club%25(5): 281%1898%%%%%%Wyoming (Northwestern U.S.A., Northern America)%tax. nov.
187750-2%1.4%Scrophulariaceae%%N%Penstemon%%var.%(Pennell) N.H.Holmgren%(Pennell)%N.H.Holmgren%Penstemon rydbergii var. aggregatus%Brittonia%31: 106%1979%%%%%%%tax. nov.
187751-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(Pennell) D.D.Keck%(Pennell)%D.D.Keck%Penstemon rydbergii subsp. aggregatus%Amer. Midl. Naturalist%33: 158%1945%%%%%%%tax. nov.
282317-2%1.4%Scrophulariaceae%%N%Penstemon%%var.%(Greene) N.H.Holmgren%(Greene)%N.H.Holmgren%Penstemon rydbergii var. oreocharis%Intermount. Fl. [Cronquist et al.]%4: 390%1984%%%%%%%tax. nov.
187752-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon rydbergii subsp. typicus%Amer. Midl. Naturalist%33: 158%1945%%%%%%%tax. nov.
187753-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(A.Nelson) Cronquist%(A.Nelson)%Cronquist%Penstemon rydbergii var. varians%Vasc. Pl. Pacif. N. W. [C.L. Hitchcock & al.]%4: 402%1959%%%%%%%tax. nov.
187754-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%(D.D.Keck) Pennell%(D.D.Keck)%Pennell%Penstemon sagittatus%Notul. Nat. Acad. Nat. Sci. Philadelphia%71: 15%1941%%%%%%%tax. nov.
187755-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Rydb.%%Rydb.%Penstemon saliens%Mem. New York Bot. Gard.%1: 344%1900%%%%%%Montana (Northwestern U.S.A., Northern America)%tax. nov.
77201816-1%1.1%Scrophulariaceae%%N%Penstemon%%spec.%N.H.Holmgren%%N.H.Holmgren%Penstemon salmonensis%Brittonia%70(1): 129, figs. 7f-j, 8%2017%%Etymology: salmon -ensis, in reference of the place of its origin, in the Salmon River Mountains (english) doi:10.1007/s12228-017-9498-9%%%%Custer County (Idaho, Northwestern U.S.A., Northern America)%tax. nov.
187756-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Crosswh.%%Crosswh.%Penstemon saltarius%Amer. Midl. Naturalist%84: 243, fig. 3%1970%%%%%%Mexico (Northern America)%tax. nov.
187757-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon saxosorum%Contr. U.S. Natl. Herb.%20: 349%1920%%%%%%Wyoming, Colorado, United States of America (Northern America)%tax. nov.
187758-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Eastw.%%Eastw.%Penstemon scabridus%Bull. Torrey Bot. Club%32: 208%1905%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187759-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%D.D.Keck%%D.D.Keck%Penstemon scapoides%Univ. Calif. Publ. Bot.%16: 379, fig. 4%1932%%%%%%California, Nevada, United States of America (Northern America)%tax. nov.
187760-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon scariosus%Contr. U.S. Natl. Herb.%20: 353%1920%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
282318-2%1.3.2.1%Scrophulariaceae%%N%Penstemon%%var.%(England) N.H.Holmgren%(England)%N.H.Holmgren%Penstemon scariosus var. albifluvis%Intermount. Fl. [Cronquist et al.]%4: 442%1984%%%Scrophulariaceae Penstemon albifluvis England%%%%comb. et stat. nov.
923645-1%1.5%Scrophulariaceae%%N%Penstemon%%var.%(England) N.H.Holmgren%(England)%N.H.Holmgren%Penstemon scariosus var. albifluvis%Intermount. Fl. [Cronquist et al.]%4: 442%1984%%%Scrophulariaceae Penstemon albifluvis England%%%%comb. nov.
282320-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%Neese%%Neese%Penstemon scariosus var. cyanomontanus%Great Basin Naturalist%46: 460%1986%%%%%%Uintah County (Utah, Southwestern U.S.A., Northern America)%tax. nov.
282319-2%1.4%Scrophulariaceae%%N%Penstemon%%var.%(Pennell) N.H.Holmgren%(Pennell)%N.H.Holmgren%Penstemon scariosus var. garrettii%Intermount. Fl. [Cronquist et al.]%4: 442%1984%%%%%%%tax. nov.
77317617-1%1.1%Scrophulariaceae%%N%Penstemon%%var.%M.R.Stevens & R.L.Johnson%%M.R.Stevens & R.L.Johnson%Penstemon scariosus var. jolynniae%Monogr. W. N. Amer. Naturalist%14: 57%2022%%Etymology: named in honour of JoLynn Johnstun Stevens, wife of Mikel R. Stevens; JoLynn noticed the specimen along the highway during a P. scariosus collection trip, which led to the discovery of this taxon’s unique genetic makeup.%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
187761-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%(Hemsl.) Straw%(Hemsl.)%Straw%Penstemon schaffneri%Brittonia%15: 56%1963%%%%%%%tax. nov.
187762-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon scoparius%Univ. Wyoming Publ. Sci., Bot.%1: 132%1926%%%%%%Arizona (Southwestern U.S.A., Northern America)%tax. nov.
187763-2%1.2.2.1%Scrophulariaceae%%N%Penstemon%%spec.%Lindl.%%Lindl.%Penstemon scouleri%%%%%%%%%%tax. nov.
808288-1%1.3.2.2.1.1.2.1.1.1%Scrophulariaceae%%N%Penstemon%%spec.%Lindl.%%Lindl.%Penstemon scouleri%Edwards's Bot. Reg.%15: t. 1277%1829%%%%%%%tax. nov.
187764-2%1.1.2.1.1.3%Scrophulariaceae%%N%Penstemon%%spec.%M.E.Jones%%M.E.Jones%Penstemon scrophularioides%Contr. W. Bot.%12: 65%1908%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
30055740-2%1.1.2.1%Scrophulariaceae%%N%Penstemon%%spec.%Benth.%%Benth.%Penstemon secundiflorus%Prodr. [A. P. de Candolle]%10: 325%1846%%%%%%United States of America (Northern America)%tax. nov.
808290-1%1.6%Scrophulariaceae%%N%Penstemon%%spec.%Benth.%%Benth.%Penstemon secundiflorus%Prodr. [A. P. de Candolle]%10: 325%1846%%%%%%%unknown
187765-2%1.3.2.1.1.1%Scrophulariaceae%%N%Penstemon%%var.%(A.Heller) A.Nelson%(A.Heller)%A.Nelson%Penstemon secundiflorus var. caudatus%New Man. Bot. Centr. Rocky Mt.%444%1909%%%Scrophulariaceae Penstemon caudatus A.Heller%%%%comb. et stat. nov.
187766-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%Pennell%%Pennell%Penstemon secundiflorus subsp. lavendulus%Contr. U.S. Natl. Herb.%20: 358%1920%%%%%%Colorado (Northwestern U.S.A., Northern America)%tax. nov.
77162272-1%1.3%Scrophulariaceae%%N%Penstemon%%var.%(Pennell) C.C.Freeman%(Pennell)%C.C.Freeman%Penstemon secundiflorus var. versicolor%PhytoKeys%80: 37%2017%%doi:10.3897/phytokeys.80.12962%Scrophulariaceae Penstemon versicolor Pennell%%%%comb. et stat. nov.
187767-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%(A.Nelson) D.D.Keck%(A.Nelson)%D.D.Keck%Penstemon seorsus%Amer. Midl. Naturalist%23: 595%1940%%%%%%%tax. nov.
187768-2%1.5%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon sepalulus%New Man. Bot. Centr. Rocky Mt.%449%1909%%%%%%%tax. nov.
60456598-2%1.1.2.1%Scrophulariaceae%%N%Penstemon%%spec.%Menzies ex Sm.%%Menzies ex Sm.%Penstemon serrulatus%Cycl. [A. Rees], (London ed.)%26(2): Pentstemon no. 5%1814%%%%%%%tax. nov.
808292-1%1.5%Scrophulariaceae%%N%Penstemon%%spec.%Menzies%%Menzies%Penstemon serrulatus%Fl. Bor.-Amer. (Hooker)%2(8): 95%1837%%%%%%%unknown
187769-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon shantzii%Amer. J. Bot.%23: 270%1936%%%%%%Arizona (Southwestern U.S.A., Northern America)%tax. nov.
187770-2%1.2%Scrophulariaceae%%N%Penstemon%%var.%A.Nelson%%A.Nelson%Penstemon shantzii var. incognitus%Amer. J. Bot.%25: 116%1938%%%%%%Arizona (Southwestern U.S.A., Northern America)%tax. nov.
307314-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%D.D.Keck%%D.D.Keck%Penstemon shastensis%Amer. Midl. Naturalist%33: 165, fig. 1, 10%1945%%%%%%Siskiyou County (California, Southwestern U.S.A., Northern America)%tax. nov.
187772-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%S.Watson%%S.Watson%Penstemon shockleyi%Proc. Amer. Acad. Arts%23: 265%1888%%%%%%Nevada (Southwestern U.S.A., Northern America)%tax. nov.
187773-2%1.5%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon similis%Bull. Torrey Bot. Club%25(10): 548%1898%%%%%%%tax. nov.
187774-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Straw%%Straw%Penstemon skutchii%Bol. Soc. Bot. México%no. 27: 13%1962%%%%%%Guatemala (Central America, Southern America)%tax. nov.
187775-2%1.5%Scrophulariaceae%%N%Penstemon%%spec.%A.Heller%%A.Heller%Penstemon smallii%Bull. Torrey Bot. Club%21(1): 25%1894%%%%%%North Carolina and Tennessee, United States of America (Northern America)%tax. nov.
187776-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%Krautter%%Krautter%Penstemon smallii var. calycosus%Contr. Bot. Lab. Morris Arbor. Univ. Pennsylvania%3: 164%1908%%%%%%%tax. nov.
187777-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon sonomensis%Pittonia%2(10): 218%1891%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187778-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Eastw. ex C.F.Baker%%Eastw. ex C.F.Baker%Penstemon spathulatus%West Amer. Pl.%3: 9%1904%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187779-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon spatulatus%Notul. Nat. Acad. Nat. Sci. Philadelphia%71: 10%1941%%%%%%Oregon (Northwestern U.S.A., Northern America)%tax. nov.
808297-1%1.3.2.2.1.2%Scrophulariaceae%%N%Penstemon%%spec.%Douglas%%Douglas%Penstemon speciosus%Edwards's Bot. Reg.%15: t. 1270%1829%%%%%%%unknown
187781-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(A.Nelson) D.D.Keck%(A.Nelson)%D.D.Keck%Penstemon speciosus subsp. kennedyi%Amer. Midl. Naturalist%23: 613%1940%%%%%%%tax. nov.
187782-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon speciosus subsp. lemhiensis%Amer. Midl. Naturalist%23: 612%1940%%%%%%Idaho (Northwestern U.S.A., Northern America)%tax. nov.
187783-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%Munz & I.M.Johnst.%%Munz & I.M.Johnst.%Penstemon speciosus var. piliferus%Bull. S. Calif. Acad. Sci.%23: 35%1924%%%%%%%tax. nov.
187784-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon speciosus subsp. typicus%Amer. Midl. Naturalist%23: 612%1940%%%%%%%tax. nov.
808298-1%1.1.2.1.1.5%Scrophulariaceae%%N%Penstemon%%spec.%Thurb. ex A.Gray%%Thurb. ex A.Gray%Penstemon spectabilis%Pacif. Railr. Rep. 4(5, no. 4) [Whipple].%119%1857%%%%%%%tax. nov.
187785-2%1.1.2.1%Scrophulariaceae%%N%Penstemon%%var.%Jeps.%%Jeps.%Penstemon spectabilis var. gilmanii%Man. Fl. Pl. Calif. [Jepson]%912%1925%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187786-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon spectabilis subsp. subinteger%Amer. Midl. Naturalist%18: 817%1937%%%%%%Baja California Norte (Mexico, Northern America)%tax. nov.
77162271-1%1.3%Scrophulariaceae%%N%Penstemon%%var.%(D.D.Keck) C.C.Freeman%(D.D.Keck)%C.C.Freeman%Penstemon spectabilis var. subinteger%PhytoKeys%80: 37%2017%%doi:10.3897/phytokeys.80.12962%Scrophulariaceae Penstemon spectabilis  subsp. subinteger D.D.Keck%%%%stat. nov.
187787-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon spectabilis subsp. subviscosus%Amer. Midl. Naturalist%18: 818%1937%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187788-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(D.D.Keck) McMinn%(D.D.Keck)%McMinn%Penstemon spectabilis var. subviscosus%Man. Calif. Shrubs%513%1939%%%%%%%tax. nov.
187789-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon spectabilis subsp. typicus%Amer. Midl. Naturalist%18: 816%1937%%%%%%%tax. nov.
808299-1%1.1.2.1.1.4%Scrophulariaceae%%N%Penstemon%%spec.%hort.%%hort.%Penstemon spicatus%Gard. Chron.%1872: 733%1872%%%%%%%unknown
187790-2%1.5%Scrophulariaceae%%N%Penstemon%%spec.%Wooton & Standl.%%Wooton & Standl.%Penstemon spinulosus%Contr. U.S. Natl. Herb.%16: 173%1913%%%%%%New Mexico (South-Central U.S.A., Northern America)%tax. nov.
808301-1%1.1.2.1.1.2.2.2%Scrophulariaceae%%N%Penstemon%%spec.%Lindl.%%Lindl.%Penstemon staticifolius%Edwards's Bot. Reg.%21: t. 1770%1835%%%%%%%unknown
30012598-2%1.1.2.1%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon stenophyllus%Rep. U.S. Mex. Bound., Bot. [Emory]%112%1859%%%%%%%tax. nov.
808302-1%1.4%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon stenophyllus%Rep. U.S. Mex. Bound., Bot. [Emory]%112.%%%%%%%%unknown
187791-2%1.2.2.1%Scrophulariaceae%%N%Penstemon%%var.%(A.Gray) A.Gray%(A.Gray)%A.Gray%Penstemon stenophyllus var. dasyphyllus%Syn. Fl. N. Amer., ed.  2.%2(1): 441%1886%%%Scrophulariaceae Penstemon dasyphyllus A.Gray%%%%comb. et stat. nov.
187792-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Howell%%Howell%Penstemon stenosepalus%Fl. N.W. Amer. [Howell]%1: 514%1901%%%%%%%tax. nov.
187793-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Brandegee%%Brandegee%Penstemon stephensii%Zoe%5: 151%1903%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187794-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Rydb.%%Rydb.%Penstemon strictiformis%Bull. Torrey Bot. Club%31: 642%1905%%%%%%Colorado (Northwestern U.S.A., Northern America)%tax. nov.
808306-1%1.6%Scrophulariaceae%%N%Penstemon%%spec.%Benth.%%Benth.%Penstemon strictus%Prodr. [A. P. de Candolle]%10: 324%1846%%%%%%%unknown
187795-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%Pennell%%Pennell%Penstemon strictus subsp. angustus%Contr. U.S. Natl. Herb.%20: 356%1920%%%%%%Colorado, Utah, United States of America (Northern America)%tax. nov.
187796-2%1.6%Scrophulariaceae%%N%Penstemon%%subsp.%(Rydb.) D.D.Keck in Kearney & Peebles%(Rydb.)%D.D.Keck in Kearney & Peebles%Penstemon strictus subsp. strictoformis%J. Wash. Acad. Sci.%29: 491%1939%%%%%%%tax. nov.
187797-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Rydb.%%Rydb.%Penstemon subglaber%Bull. Torrey Bot. Club%36: 688%1909%%%%%%%tax. nov.
187798-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon subserratus%Notul. Nat. Acad. Nat. Sci. Philadelphia%71: 13%1941%%%%%%Washington & Oregon, United States of America (Northern America)%tax. nov.
187799-2%1.1.2.1.1.2%Scrophulariaceae%%N%Penstemon%%spec.%M.E.Jones%%M.E.Jones%Penstemon subulatus%Contr. W. Bot.%12: 63%1908%%%%%%Arizona (Southwestern U.S.A., Northern America)%tax. nov.
187800-2%1.1.2.1.1.1%Scrophulariaceae%%N%Penstemon%%spec.%M.E.Jones%%M.E.Jones%Penstemon sudans%Contr. W. Bot.%8: 37%1898%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187801-2%1.2.2.2.1.1%Scrophulariaceae%%N%Penstemon%%spec.%Rydb.%%Rydb.%Penstemon suffrutescens%Bull. Torrey Bot. Club%28(9): 503%1901%%Rydberg flagged his taxon P. suffrutescens as sp. nov. and cited Pentstemon caespitosus var. suffruticosus A. Gray, Syn. Fl. 21: 270. 1878. Not P. sufjfruticosus Dougl. 1846. as a synonym and Colorado: Ridgway as the locality; he also cited 1895, F. Tweedy, 170 and gave a diagnosis (Excellent specimens ... have been collected by Mr. Tweedy, and these show that the plant is nearer related to P. pumilus than to P. caespitosus, but the calyx lobes are broader, shorter and blunter than in that species, the corolla slightly smaller and the leaves glabrous.)%%%%United States of America (Northern America)%tax. nov.
808310-1%1.1.2.1.1.3%Scrophulariaceae%%N%Penstemon%%spec.%Rydb.%%Rydb.%Penstemon suffrutescens%Bull. Torrey Bot. Club%31: 503%1904%%%%%%%unknown
808311-1%1.1.2.1.1.6%Scrophulariaceae%%N%Penstemon%%spec.%Douglas ex Benth.%%Douglas ex Benth.%Penstemon suffruticosus%Prodr. [A. P. de Candolle]%10: 330%1846%%%%%%%unknown
187802-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon superbus%Proc. Biol. Soc. Washington%17: 100%1904%%%%%%%tax. nov.
808313-1%1.5%Scrophulariaceae%%N%Penstemon%%spec.%Kellogg%%Kellogg%Penstemon tenellus%Proc. Calif. Acad. Sci.%1: 56%1855%%%%%%%unknown
187803-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon tenuiflorus%Addisonia%4: 79, pl. 160%1919%%%%%%Illinois to Alabama, Oklahoma, United States of America (Northern America)%tax. nov.
808315-1%1.2.2.1.1.2%Scrophulariaceae%%N%Penstemon%%spec.%Benth.%%Benth.%Penstemon tenuifolius%Pl. Hartw. [Bentham]%22%1839%%%%%%%unknown
187804-2%1.2%Scrophulariaceae%%N%Penstemon%%spec.%Small%%Small%Penstemon tenuis%Fl. S.E. U.S. [Small].%1061, 1337%1903%%%%%%Louisiana (Southeastern U.S.A., Northern America)%tax. nov.
187805-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Straw%%Straw%Penstemon tepicensis%Brittonia%15: 63%1963%%%%%%Nayarit (Mexico, Northern America)%tax. nov.
60431656-2%1.1%Scrophulariaceae%%N%Penstemon%%spec.%Nutt.%%Nutt.%Penstemon teretiflorus%Cat. Pl. Upper Louisiana%[unpaged] no. 66%1813%nom. inval. nom. nud.%%%%%United States of America (Northern America)%tax. nov.
808317-1%1.1.2.1.1.3%Scrophulariaceae%%N%Penstemon%%spec.%Fraser f. ex Nutt.%%Fraser f. ex Nutt.%Penstemon teretiflorus%Gen. N. Amer. Pl. [Nuttall].%2: 53%1818%pro syn.    , under P. albidum%Cites 'Fras. Catal. 1813' = Cat. Pl. Upper Louisiana%%%%%unknown
808318-1%1.1.2.1.1.5%Scrophulariaceae%%N%Penstemon%%spec.%Torr. ex A.Gray%%Torr. ex A.Gray%Penstemon ternatus%Rep. U.S. Mex. Bound., Bot. [Emory]%115.%%%%%%%%unknown
187807-2%1.4%Scrophulariaceae%%N%Penstemon%%subsp.%(Munz & I.M.Johnst.) D.D.Keck%(Munz & I.M.Johnst.)%D.D.Keck%Penstemon ternatus subsp. septentrionalis%Madroño%3: 216%1936%%%%%%%tax. nov.
307626-2%1.4%Scrophulariaceae%%N%Penstemon%%var.%Munz & I.M.Johnst.%%Munz & I.M.Johnst.%Penstemon ternatus var. septentrionalis%Bull. S. Calif. Acad. Sci.%23: 28%1924%%%%%%Los Angeles County (California, Southwestern U.S.A., Northern America)%tax. nov.
187809-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon ternatus subsp. typicus%Madroño%3: 216%1936%%%%%%%tax. nov.
187810-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon teucrioides%Pl. Baker. [Greene]%3: 23%1901%%%%%%Colorado (Northwestern U.S.A., Northern America)%tax. nov.
808320-1%1.1.2.1.1.5%Scrophulariaceae%%N%Penstemon%%spec.%hort. ex E.Vilm.%%hort. ex E.Vilm.%Penstemon themisteri%Fl. Pleine Terre (ed. 2)%657%1866%%%%%%%unknown
187811-2%1.3.2.1.1.1%Scrophulariaceae%%N%Penstemon%%spec.%(A.Gray) Rydb.%(A.Gray)%Rydb.%Penstemon thompsoniae%Bull. Torrey Bot. Club%36: 690%1909%%%Scrophulariaceae Penstemon pumilus  var. thompsoniae A.Gray%%%%comb. et stat. nov.
282321-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%Neese%%Neese%Penstemon thompsoniae var. desperatus%Great Basin Naturalist%46: 460%1986%%%%%%Beaver County (Utah, Southwestern U.S.A., Northern America)%tax. nov.
187812-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon thompsoniae subsp. jaegeri%Bull. Torrey Bot. Club%64: 362%1937%%%%%%Nevada (Southwestern U.S.A., Northern America)%tax. nov.
77328116-1%1.2%Scrophulariaceae%%N%Penstemon%%var.%(D.D.Keck) Tiehm%(D.D.Keck)%Tiehm%Penstemon thompsoniae var. jaegeri%J. Bot. Res. Inst. Texas%17(1): 26%2023%%doi:10.17348/jbrit.v17.i1.1288%Scrophulariaceae Penstemon thompsoniae  subsp. jaegeri D.D.Keck%%%%stat. nov.
187813-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon thompsoniae subsp. typicus%Bull. Torrey Bot. Club%64: 361%1937%%%%%%%tax. nov.
808322-1%1.5%Scrophulariaceae%%N%Penstemon%%spec.%Torr.%%Torr.%Penstemon thurberi%Pacif. Railr. Rep.%vii. 15%%%%%%%%unknown
187815-2%1.4%Scrophulariaceae%%N%Penstemon%%var.%Reveal & Beatley%%Reveal & Beatley%Penstemon thurberi var. anestius%Great Basin Naturalist%34: 230%1974%%%%%%Nevada (Southwestern U.S.A., Northern America)%tax. nov.
187816-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon tidestromii%Contr. U.S. Natl. Herb.%20: 379%1920%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
315924-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%N.H.Holmgren%%N.H.Holmgren%Penstemon tiehmii%Brittonia%50: 159%1998%%[Gandhi 13 Jul 1998]%%%%Shoshone Range, Mt. Lewis area, SE of the peak, along the main road, SSE of Battle Mountain (town), T29N R45E S11, 8600 ft, Lander County (Nevada, Southwestern U.S.A., Northern America)%tax. nov.
187817-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon tinctus%Notul. Nat. Acad. Nat. Sci. Philadelphia%71: 6%1941%%%%%%California & Oregon, United States of America (Northern America)%tax. nov.
808324-1%1.1.2.2.1.3%Scrophulariaceae%%N%Penstemon%%spec.%Hook.%%Hook.%Penstemon tolmiei%Fl. Bor.-Amer. (Hooker)%2(9): 98%1838%%%%%%%unknown
187819-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(Pennell) D.D.Keck%(Pennell)%D.D.Keck%Penstemon tolmiei subsp. brachyanthus%Amer. Midl. Naturalist%33: 148%1945%%%%%%%tax. nov.
187820-2%1.3.2.1%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon tolmiei subsp. formosus%Amer. Midl. Naturalist%33(1): 147%1945%%%%%%%unknown
187821-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(Greene) D.D.Keck%(Greene)%D.D.Keck%Penstemon tolmiei subsp. modestus%Amer. Midl. Naturalist%33: 148%1945%%%%%%%tax. nov.
187822-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon tolmiei subsp. typicus%Amer. Midl. Naturalist%33: 147%1945%%%%%%%tax. nov.
808325-1%1.7%Scrophulariaceae%%N%Penstemon%%spec.%Benth.%%Benth.%Penstemon torreyi%Prodr. [A. P. de Candolle]%10: 324%1846%%%%%%%unknown
808326-1%1.1.2.2.1.4%Scrophulariaceae%%N%Penstemon%%spec.%hort. ex Regel%%hort. ex Regel%Penstemon torreyi%Index Seminum [St.Petersburg (Petropolitanus)]%(1860) 40.%%%%%%%%unknown
187824-2%1.2%Scrophulariaceae%%N%Penstemon%%spec.%D.D.Keck%%D.D.Keck%Penstemon tracyi%Amer. Midl. Naturalist%23: 603, fig. 1, 2%1940%%%%%%California (Southwestern U.S.A., Northern America)%tax. nov.
187825-2%1.5%Scrophulariaceae%%N%Penstemon%%spec.%Rydb.%%Rydb.%Penstemon trichander%Bull. Torrey Bot. Club%33: 151%1906%%%%%%%tax. nov.
187826-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%A.Heller%%A.Heller%Penstemon triflorus%Contr. Herb. Franklin Marshall Coll.%no. 1, 92, pl. 8%1895%%%%%%Texas (South-Central U.S.A., Northern America)%tax. nov.
187827-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%Pennell%%Pennell%Penstemon triflorus subsp. integrifolius%Monogr.  Acad.  Nat.  Sci.  Philadelphia%1: 251%1935%%%%%%Texas (South-Central U.S.A., Northern America)%tax. nov.
187828-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(Pennell) Cory%(Pennell)%Cory%Penstemon triflorus var. integrifolius%Rhodora%38: 407%1936%%%%%%%tax. nov.
187829-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%Pennell%%Pennell%Penstemon triflorus subsp. typicus%Monogr.  Acad.  Nat.  Sci.  Philadelphia%1: 251%1935%%%%%%%tax. nov.
30144408-2%1.2%Scrophulariaceae%%N%Penstemon%%spec.%Douglas%%Douglas%Penstemon triphyllus%Edwards's Bot. Reg.%15: t. 1245%1829%%The species name and a detailed description are together ascribed to Douglas%%%%%tax. nov.
808329-1%1.3.2.2.1.1%Scrophulariaceae%%N%Penstemon%%spec.%Douglas%%Douglas%Penstemon triphyllus%Edwards's Bot. Reg.%15: t. 1245%1829%%%%%%%unknown
187830-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon triphyllus subsp. diphyllus%Univ. Calif. Publ. Bot.%16: 422%1932%%%%%%%tax. nov.
77201814-1%1.1%Scrophulariaceae%%N%Penstemon%%var.%N.H.Holmgren%%N.H.Holmgren%Penstemon triphyllus var. infernalis%Brittonia%70(1): 125, figs. 5-6%2017%%Etymology: infernalis, infernal, of or relating to the underworld or hell, in this case at the bottom of Hells Canyon. (english) doi:10.1007/s12228-017-9498-9%%%%Wallowa County (Oregon, Northwestern U.S.A., Northern America)%tax. nov.
187831-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon triphyllus subsp. typicus%Univ. Calif. Publ. Bot.%16: 422%1932%%%%%%%tax. nov.
187832-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon truncatus%Notul. Nat. Acad. Nat. Sci. Philadelphia%71: 5%1941%%%%%%Oregon (Northwestern U.S.A., Northern America)%tax. nov.
187833-2%1.2%Scrophulariaceae%%N%Penstemon%%f.%Pennell%%Pennell%Penstemon truncatus f. puberulus%Notul. Nat. Acad. Nat. Sci. Philadelphia%71: 5%1941%%%%%%Oregon (Northwestern U.S.A., Northern America)%tax. nov.
30028415-2%1.4.2.1%Scrophulariaceae%%N%Penstemon%%spec.%Nutt.%%Nutt.%Penstemon tubaeflorus%Trans. Amer. Philos. Soc.%ser. 2, 5: 181%1835%%tubi- from tube (tubus, tubi) or from trumpet (tuba, tubae) where tubaeflorus can only mean trumpet-flowered (Vienna Code Rec. 60G.1(b)).%%%%Arkansas (Southeastern U.S.A., Northern America)%tax. nov.
187834-2%1.1.2.1%Scrophulariaceae%%N%Penstemon%%var.%Fernald%%Fernald%Penstemon tubaeflorus var. achoreus%Rhodora%51: 83%1949%%%%%%New England & Ontario south to Pennsylvania%tax. nov.
290691-2%1.2.2.1.1.1%Scrophulariaceae%%N%Penstemon%%spec.%N.H.Holmgren%%N.H.Holmgren%Penstemon tusharensis%Brittonia%31(1): 106 (-107)%1979%nom. illeg. nom. superfl.%With a belief that P. xylus Nelson (1902) was published as a sp. nov. and was based on “Mr. H. N. Wheeler at Sapinero, Colo., 1898”, N.H. Holmgren published his P. tusharensis as a nom. & stat. nov. for A. Gray's varietal name. Nelson, however, published his P. xylus as a nom. & stat. nov. for A. Gray's varietal name.%%%%%nom. nov.
187835-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Canby & Rose%%Canby & Rose%Penstemon tweedyi%Bot. Gaz.%15: 66%1890%%%%%%Montana (Northwestern U.S.A., Northern America)%tax. nov.
187836-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon uintahensis%Contr. U.S. Natl. Herb.%20: 350%1920%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
187837-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Rydb.%%Rydb.%Penstemon unilateralis%Bull. Torrey Bot. Club%33: 150%1906%%%%%%Rocky Mountains%tax. nov.
187838-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Eastw.%%Eastw.%Penstemon utahensis%Zoe%4: 124%1893%%%%%%Utah (Southwestern U.S.A., Northern America)%tax. nov.
187839-2%1.5%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon utahensis%Bull. Torrey Bot. Club%26(5): 242%1899%%%%%%%tax. nov.
187840-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Suksd.%%Suksd.%Penstemon variabilis%Deutsche Bot. Monatsschr.%18: 153%1900%%%%%%Washington (Northwestern U.S.A., Northern America)%tax. nov.
187841-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon vaseyanus%Leafl. Bot. Observ. Crit.%1: 200%1906%%%%%%%tax. nov.
187842-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%(D.D.Keck) Reveal%(D.D.Keck)%Reveal%Penstemon venosus%Great Basin Naturalist%34: 311%1974%%%%%%%tax. nov.
808338-1%1.3.2.2.1.1%Scrophulariaceae%%N%Penstemon%%spec.%Douglas%%Douglas%Penstemon venustus%Edwards's Bot. Reg.%16: t. 1309%1830%%%%%%%unknown
187843-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon veronicifolius%Leafl. Bot. Observ. Crit.%1: 167%1906%%%%%%Idaho (Northwestern U.S.A., Northern America)%tax. nov.
187844-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon versicolor%Contr. U.S. Natl. Herb.%20: 358%1920%%%%%%Colorado (Northwestern U.S.A., Northern America)%tax. nov.
808341-1%1.1.2.1.1.3.1.2%Scrophulariaceae%%N%Penstemon%%spec.%M.Martens & Galeotti%%M.Martens & Galeotti%Penstemon verticillatus%Bull. Acad. Roy. Sci. Bruxelles%xii. II. 18%1845%%%%%%%unknown
187845-2%1.4%Scrophulariaceae%%N%Penstemon%%spec.%(Brandegee) A.Nelson%(Brandegee)%A.Nelson%Penstemon violaceus%Proc. Biol. Soc. Washington%17: 96%1904%%%%%%Nevada (Southwestern U.S.A., Northern America)%tax. nov.
187846-2%1.2%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon virens%Fl. Rocky Mts.%77, 1066%1917%%%%%%%tax. nov.
808344-1%1.4%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon virgatus%Rep. U.S. Mex. Bound., Bot. [Emory]%112.%%%%%%%%unknown
187847-2%1.5%Scrophulariaceae%%N%Penstemon%%subsp.%(A.Gray) D.D.Keck in Kearney & Peebles%(A.Gray)%D.D.Keck in Kearney & Peebles%Penstemon virgatus subsp. arizonicus%J. Wash. Acad. Sci.%29: 491%1939%%%%%%%tax. nov.
282322-2%1.4%Scrophulariaceae%%N%Penstemon%%subsp.%Crosswh.%%Crosswh.%Penstemon virgatus subsp. asagrayi%Southw. Naturalist%10: 318%1965%%%%%%Colorado (Northwestern U.S.A., Northern America)%tax. nov.
282323-2%1.6%Scrophulariaceae%%N%Penstemon%%var.%(Crosswh.) Dorn%(Crosswh.)%Dorn%Penstemon virgatus var. asagrayi%Vasc. Pl. Wyoming%300%1988%%%%%%%tax. nov.
187849-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%Crosswh.%%Crosswh.%Penstemon virgatus subsp. pseudoputus%Amer. Midl. Naturalist%77: 35, fig%1967%%%%%%Coconino County, Arizona (Southwestern U.S.A., Northern America)%tax. nov.
187850-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(A.Nelson) Crosswh.%(A.Nelson)%Crosswh.%Penstemon virgatus subsp. putus%Amer. Midl. Naturalist%77: 34%1967%%%%%%%tax. nov.
808345-1%1.4%Scrophulariaceae%%N%Penstemon%%spec.%Nees%%Nees%Penstemon viscidulus%in Neuwied, Reise Nord-Am.%ii. 444%%%%%%%%unknown
187851-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Moran%%Moran%Penstemon vizcainensis%Phytologia%45: 498%1980%%%%%%Mexico (Northern America)%tax. nov.
187852-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Crosswh.%%Crosswh.%Penstemon vulcanellus%Amer. Midl. Naturalist%84: 240, fig. 1%1970%%%%%%Mexico (Northern America)%tax. nov.
808346-1%1.5%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon wardii%Proc. Amer. Acad. Arts%xii. (1877) 82.%%%%%%%%unknown
187854-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%D.D.Keck%%D.D.Keck%Penstemon washingtonensis%Amer. Midl. Naturalist%33: 150, fig. 6%1945%%%%%%Washington (Northwestern U.S.A., Northern America)%tax. nov.
187855-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Greene%%Greene%Penstemon washoensis%Leafl. Bot. Observ. Crit.%1: 163%1906%%%%%%Nevada (Southwestern U.S.A., Northern America)%tax. nov.
808348-1%1.1.2.1.1.4%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon watsonii%Syn. Fl. N. Amer.%2(1): 267%1878%%%%%%%unknown
187856-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(A.Nelson) D.D.Keck%(A.Nelson)%D.D.Keck%Penstemon watsonii subsp. laxus%Amer. Midl. Naturalist%23: 610%1940%%%%%%%tax. nov.
187857-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon watsonii subsp. typicus%Amer. Midl. Naturalist%33: 177%1945%%%%%%%tax. nov.
77106966-1%1.2%Scrophulariaceae%%N%Penstemon%%spec.%B.L.Turner%%B.L.Turner%Penstemon wendtiorum%Phytoneuron%2010-31: 2 (-3; fig. 1, map)%2010%%%%%%Coahuila (Mexico Northeast, Mexico, Northern America)%tax. nov.
187858-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon wherryi%Monogr.  Acad.  Nat.  Sci.  Philadelphia%1: 228%1935%%%%%%Arkansas & Oklahoma, United States of America (Northern America)%tax. nov.
808349-1%1.4%Scrophulariaceae%%N%Penstemon%%spec.%A.Gray%%A.Gray%Penstemon whippleanus%Proc. Amer. Acad. Arts%vi. (1862) 73.%%%%%%%%unknown
187859-2%1.1.2.1.1.1%Scrophulariaceae%%N%Penstemon%%spec.%Piper%%Piper%Penstemon whitedii%Bot. Gaz.%22: 490%1896%%%%%%Washington (Northwestern U.S.A., Northern America)%tax. nov.
187860-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%(Howell) D.D.Keck%(Howell)%D.D.Keck%Penstemon whitedii subsp. dayanus%Bull. Torrey Bot. Club%65: 254%1938%%%%%%%tax. nov.
187861-2%1.3%Scrophulariaceae%%N%Penstemon%%var.%(Howell) M.Peck%(Howell)%M.Peck%Penstemon whitedii var. dayanus%Man. Pl. Oregon%647%1941%%%%%%%tax. nov.
187862-2%1.3%Scrophulariaceae%%N%Penstemon%%subsp.%Pennell & D.D.Keck%%Pennell & D.D.Keck%Penstemon whitedii subsp. tristis%Bull. Torrey Bot. Club%65: 254%1938%%%%%%Idaho, Oregon, United States of America (Northern America)%tax. nov.
187863-2%1.2%Scrophulariaceae%%N%Penstemon%%subsp.%D.D.Keck%%D.D.Keck%Penstemon whitedii subsp. typicus%Bull. Torrey Bot. Club%65: 253%1938%%%%%%%tax. nov.
187864-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Rydb.%%Rydb.%Penstemon wilcoxii%Bull. Torrey Bot. Club%28: 28%1901%%%%%%Montana (Northwestern U.S.A., Northern America)%tax. nov.
187865-2%1.3.2.1%Scrophulariaceae%%N%Penstemon%%spec.%Pennell%%Pennell%Penstemon wisconsinensis%Monogr.  Acad.  Nat.  Sci.  Philadelphia%1: 234%1935%nom. inval.    Pennell (p. 234) proposed “P. wisconsinensis” as the name of a new species, and on p. 571, he made “P. gracilis var. wisconsinensis (Pennell) Pennell” as a new combination; on p. 632, he mentioned that he substituted “P. wisconsinensis” with P. gracilis var. wisconsinensis.%%%%%Wisconsin (North-Central U.S.A., Northern America)%tax. nov.
187866-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%(A.Gray) Straw%(A.Gray)%Straw%Penstemon wislizeni%Bol. Soc. Bot. México%no. 24: 50%1959%%%%%%%tax. nov.
187867-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon woodsii%Bot. Gaz.%52: 274%1911%%%%%%Idaho (Northwestern U.S.A., Northern America)%tax. nov.
808353-1%1.5%Scrophulariaceae%%N%Penstemon%%spec.%Hook.%%Hook.%Penstemon wrightii%Bot. Mag.%77: t. 4601%1851%%%%%%%unknown
187868-2%1.2.2.1.1.1%Scrophulariaceae%%N%Penstemon%%spec.%A.Nelson%%A.Nelson%Penstemon xylus%Bot. Gaz.%34(1): 31 (-32)%1902%%Nelson published P. xylus as n. n. (= nom. nov.) for P. caespitosus var. suffruticosus A. Gray and remarked the following: (in adnot. & p. 32): This description and the notes upon it were written before I discovered Dr. Rydberg's Pentstemon suffrutescens, Bull. Torr. Bot. Club 28: 503. From the very limited notes there given I judge that he and I are considering totally different plants. As I feel quite certain that I have the true P. caespitosus suffruticosus Gray, I still present this description ... The specimens before me were collected by Mr. H. N. Wheeler at Sapinero, Colo., 1898, no. 446, and in my judgment are referable to P. caespitosus suffruticosus Gray.%%%%%nom. et stat. nov.
282333-2%1.3%Scrophulariaceae%%N%Penstemon%%spec.%Penland%%Penland%Penstemon yampaensis%Madroño%14: 156, fig%1958%%%%%%Colorado (Northwestern U.S.A., Northern America)%tax. nov.