Penstemon pachyphyllus subsp. congestus (M.E.Jones) D.D.Keck
, J. Wash. Acad. Sci. 29: 490 (1939). BHL
External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:187630-2
- Species Name
- Penstemon pachyphyllus A.Gray ex Rydb., Fl. Rocky Mts. 770, 1066 (1917).
- Publication
- Journal of the Washington Academy of Sciences. Baltimore, MD
- Collation
- 29: 490
- Family as entered in IPNI
- Scrophulariaceae