External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:187256-2
- Publication
- Minnesota Botanical Studies
- Collation
- 2: 34
- Family as entered in IPNI
- Scrophulariaceae
Type Information
- Distribution Of Types
- New Mexico (South-Central U.S.A., Northern America)
Links
- Basionym of
- Penstemon secundiflorus var. caudatus (A.Heller) A.Nelson, New Man. Bot. Centr. Rocky Mt. 444 (1909).
- Nomenclatural link
- Penstemon angustifolius var. caudatus (A.Heller) Rydb.
- Nomenclatural link
- Penstemon secundiflorus var. caudatus (A.Heller) A.Nelson
- Nomenclatural link
- Penstemon angustifolius var. caudatus Rydb., Bull. Torrey Bot. Club 33: 151 (1906).
- Nomenclatural link
- Penstemon angustifolius subsp. caudatus (A.Heller) D.D.Keck, J. Wash. Acad. Sci. 29: 490 (1939).
- Nomenclatural link
- Penstemon angustifolius subsp. caudatus (A.Heller) D.D.Keck in Kearney & Peebles
- Same citation as
- Penstemon caudatus A.Heller, Minnesota Bot. Stud. ii. 34.