Penstemon cobaea subsp. purpureus Pennell
, Monogr. Acad. Nat. Sci. Philadelphia 1: 250 (1935).
External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:187277-2
- Publication
- Monographs, Academy of Natural Sciences of Philadelphia. Philadelphia, PA.
- Collation
- 1: 250
- Family as entered in IPNI
- Scrophulariaceae