Penstemon filiformis (D.D.Keck) D.D.Keck in Abrams

, Ill. Fl. Pacific States 3: 761 (1951).
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External links to taxonomic opinions:
WFO POWO
IPNI Life Sciences Identifier (LSID)
urn:lsid:ipni.org:names:187388-2
Publication
Illustrated Flora of the Pacific States, An
Collation
3: 761
Family as entered in IPNI
Scrophulariaceae

Links

Nomenclatural link
Penstemon laetus subsp. filiformis D.D.Keck, Univ. Calif. Publ. Bot. 16: 394 (1932).
Same citation as
Penstemon filiformis (Keck) Keck, in Abrams, Ill. Fl. Pacific States iii. 761 (1951).