Penstemon eriantherus var. redactus

Pennell & D. D. Keck

Bull. Torrey Bot. Club 65: 252. 1938.

Endemic
Synonyms: Penstemon whitedii subsp. tristis Pennell & D. D. Keck
Treatment appears in FNA Volume 17. Treatment on page 135. Mentioned on page 134.

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.

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.