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Plantaginaceae
Penstemon
Penstemon filiformis
Penstemon filiformis
Threadleaf beardtongue
(D.D.Keck) D.D.Keck 1951 -
L.Abrams, Ill. Fl. Pacific States 3: 761 (1951)
Specifications
Images
Synonyms
Penstemon laetus subsp. filiformis
D.D.Keck
Penstemon laetus var. filiformis
(D.D.Keck) McMinn