Herbs perennial, tuft-forming, caulescent to subacaulescent; caudex superficial. Hairs malpighian. Stems single or few to several. Stipules distinct. Leaves odd-pinnate, petiolate; leaflets (3–)7–19. Racemes dimorphic, chasmogamous densely (3–)5–17-flowered, flowers ascending, cleistogamous reduced to 1–3 sessile flowers in leaf axils. Calyx tubes campanulate. Corollas (chasmogamous) greenish white to ochroleucous or purple, banner recurved through 45–80°, keel apex blunt or deltate, cleistogamous petals minute. Legumes deciduous, sessile, spreading or ascending (humistrate), ovoid to narrowly oblong-ellipsoid or lanceoloid, compressed dorsally or 3-sided, unilocular. Seeds 24–40.

Distribution

c, nw North America.

Discussion

Species 1.

Selected References

None.

Lower Taxa

Astragalus lotiflorus