Penstemon eriantherus var. argillosus

M. E. Jones

Contr. W. Bot. 12: 62. 1908.

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.
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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.