Herbs 2–7 dm, densely silky throughout, hairs forwardly appressed. Stems branched or unbranched. Leaves usually cauline, basal leaves usually absent at flowering, if pre­sent then petioles less than 3 times as long as leaflets; leaflet blades narrow and folded, oblanceolate or elliptic-oblanceolate, surfaces densely silky. Pedicels (1–)2–5(–6) mm. Flowers 5–9 mm; calyx bulge 0–1 mm; corolla purplish blue, wings 5–7.5 mm, banner densely hairy abaxially, to middle or distally. 2n = 48.

Phenology: Flowering Jun–Aug.
Habitat: Dry, open places, sagebrush plains, low hills in the intermountain region, slopes and ridges of the Rocky Mountains.
Elevation: 1500–3500 m.

Distribution

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Colo., Idaho, Nev., Oreg., Utah.

Discussion

Variety holosericeus is known from the Ruby Mountains of northeastern Nevada through the middle and lower Snake River plains and Owyhee Desert in southern Idaho and adjacent Oregon, northern Nevada, western Colorado, and northeastern Utah.

This variety is close to var. utahensis, but the flowers are smaller, and the calyx is not spurred.

Selected References

None.

Lower Taxa

None.