Penstemon eriantherus var. argillosus

M. E. Jones

Contr. W. Bot. 12: 62. 1908. (as Pentstemon)

Endemic
Synonyms: Penstemon whitedii subsp. dayanus (Howell) D. D. Keck
Treatment appears in FNA Volume 17. Treatment on page 134. Mentioned on page 135, 136.

Stems retrorsely hairy, hairs sometimes appressed, white, scalelike, and sometimes also glandular-villous distally. Leaves glabrous abaxially, retrorsely hairy or puberulent adaxially, hairs sometimes appressed, white, scalelike. Flowers: corolla lavender to violet, funnelform, 18–28 mm, not constricted at orifice; pollen sacs navicular to subexplanate, 1.2–1.6 mm; staminode: distal 3–5 mm sparsely lanate, hairs yellow, to 1 mm; style 12–14 mm.


Phenology: Flowering May–Jun.
Habitat: Sandy or gravelly soils, juniper woodlands.
Elevation: 300–1300 m.

Discussion

Variety argillosus is known from north-central Oregon. Populations are concentrated in the John Day and Deschutes river drainages in Crook, Gilliam, Grant, and Wheeler counties.

Selected References

None.

Lower Taxa

None.