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Plantaginaceae
Penstemon
Penstemon angustifolius var. caudatus
Penstemon angustifolius var. caudatus
(A.Heller) Rydb., 1906
20% complete
No common name
Bull. Torrey Bot. Club 33:151. 1906
Specifications
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Synonyms
Penstemon caudatus
A.Heller
Penstemon angustifolius subsp. caudatus
(A.Heller) D.D.Keck