Plants robust, (2–)5–30(–40) cm, hirsute or hirsutulous; taproot long. Stems erect or ascend­ing, usually flexuous and abruptly angled distal to each node, hirsute or hirsutulous. Leaves 3–10(–11) cm; stipules lanceolate-attenuate, (1.5–)2.5–8(–9) mm, herbaceous, some­times papery at proximal nodes; leaflet blades obovate to elliptic, (3–)5–19 mm, apex acute to obtuse or retuse, surfaces pubescent abaxially, sometimes glabrous adax­ially. Peduncles erect, 1.5–5.5 cm. Racemes 10–25-flowered; axis (1–)2–5 cm in fruit; bracts (2.5–)4–12 mm; bracteoles 0–2. Pedicels 0.5–2.3 mm. Flowers 12–15.3 mm; calyx 9.5–13 mm, hirsute to hirsutulous, tube 7–8.6 mm, lobes subulate to linear-subulate, 2.5–5.5 mm; corolla bicolored, keel tip maculate. Legumes stramineous, incurved, (20–)25–40 × (4–)5–7(–8) mm, thin becoming papery, glabrous. 2n = 24.

Phenology: Flowering Apr–Jul.
Habitat: Dunes, other sandy sites.
Elevation: 70–800 m.

Distribution

• Generated Map
• Legacy Map

Oreg., Wash.

Discussion

Astragalus succumbens is restricted to central to southeastern Washington and adjacent Oregon along and near the Columbia River.

Selected References

None.

Lower Taxa

None.