Penstemon angustifolius subsp. caudatus (A.Heller) D.D.Keck

, J. Wash. Acad. Sci. 29: 490 (1939). BHL
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External links to taxonomic opinions:
POWO
IPNI Life Sciences Identifier (LSID)
urn:lsid:ipni.org:names:187149-2
Publication
Journal of the Washington Academy of Sciences. Baltimore, MD
Collation
29: 490
Family as entered in IPNI
Scrophulariaceae

Links

Nomenclatural link
Penstemon caudatus A.Heller, Minnesota Bot. Stud. 2: 34 (1898).
Same citation as
Penstemon angustifolius subsp. caudatus (A.Heller) D.D.Keck in Kearney & Peebles