familyPlantaginaceae
genusPenstemon
subgenusPenstemon subg. Penstemon
sectionPenstemon sect. Cristati
speciesPenstemon eriantherus
Penstemon eriantherus var. redactus
Bull. Torrey Bot. Club 65: 252. 1938.
Endemic
Synonyms: Penstemon whitedii subsp. tristis Pennell & D. D. Keck
Revision as of 18:30, 24 September 2019 by FNA>Volume Importer
Stems retrorsely hairy, sometimes also glandular-pubescent distally or wholly. Leaves glabrous or retrorsely hairy abaxially, retrorsely hairy and, sometimes, sparsely villous adaxially. Flowers: corolla lavender to violet, ventricose-ampliate, 18–25 mm, not constricted at orifice; pollen sacs navicular to subexplanate, 1.2–1.9 mm; staminode: distal 4–5 mm moderately lanate, hairs yellow, to 3 mm; style 9–14 mm. 2n = 16.
Phenology: Flowering May–Jul.
Habitat: Sandy or gravelly soils, sagebrush shrublands.
Elevation: 600–2700 m.
Distribution
Idaho, Mont., Oreg.
Discussion
Variety redactus occurs largely in the Salmon River Basin in Idaho (Butte, Clark, Custer, Idaho, and Lemhi counties), southwestern Montana (Beaverhead, Deer Lodge, Madison, and Silverbow counties), and northeastern Oregon (Wallowa County).
Selected References
None.
Lower Taxa
None.