Penstemon crandallii var. atratus (D.D.Keck) N.H.Holmgren
, Brittonia 31: 105 (1979).
External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:187309-2
- Species Name
- Penstemon crandallii A.Nelson, Bull. Torrey Bot. Club 26(7): 354 (1899).
- Publication
- Brittonia; a Series of Botanical Papers. New York, NY
- Collation
- 31: 105
- Family as entered in IPNI
- Scrophulariaceae