Stems (1–)1.5–3.5(–7) cm. Leaves: stipules (3–)4–10 mm; leaflets (7–)11–17, blades broadly ovate to rhombic-elliptic, (6–)10–25 mm, apex obtuse; bracts 3–7.5 mm; brac­teoles (0.4–)1–4 mm. Flowers (16–)17–20.5 mm; calyx (8.5–)10.2–13.5 mm, mostly glabrous, sometimes margins and lobes with few hairs, tube (4.6–)5.1–6.3 mm, lobes (3.6–)5–7.1 mm; corolla pur­ple or bicolored and wings tipped pale or white. Legumes usually mottled, sometimes faintly so, (15–)20–30 × 7–12 mm, dorsal face flattened or shallowly and openly sulcate. 2n = 22.

Phenology: Flowering May–Jul.
Habitat: Sagebrush, bunchgrass, and juniper communities, on sandy, gravelly, or heavy clay soils.
Elevation: 600–1900 m.

Distribution

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B.C., Idaho, Nev., Oreg., Wash.

Discussion

Variety weiserensis is known from the lower Fraser River in southern British Columbia southward to the lower Humboldt River valley in Pershing County, Nevada, and eastward to Franklin County in Idaho.

The long calyx lobes of var. weiserensis are apparently diagnostic, but where var. beckwithii approaches this variety in the Raft River Mountains of northern Utah, adjacent to the Idaho border, there appears to be a gradual transition.

Selected References

None.

Lower Taxa

None.