Flora of North America species comparison

erect and wiry, villosulous to puberulent, hairs silvery.

trifoliolate;

stipules persistent, linear, 1 × 0.5 mm, apex acuminate;

petiole 1–3 mm, puberulent;

leaflet blades elliptic, 5–20 × 4–10 mm, leathery, gland-dotted abaxially, base cuneate, margins revolute, apex acute to obtuse, frequently apiculate, surfaces puberulent abaxially, finely strigose adaxially.

1(2 or 3) simple flowers per axil, longer than leaves, 0.7–1.5 cm.

3–5 mm.

calyx 5–8 mm, hirtellous, tube 1.5–3 mm, lobes lanceolate, laterals 4.5–5 mm, lengths to 2.5 times tube, adaxials 1–1.5 mm;

corolla yellow, veined purple;

banner obovate to orbiculate, 8–10 × 7–10 mm, emarginate, glabrous;

wings narrowly oblong, 8.5–10 × 2–2.5 mm, glabrous;

keel 9–10 × 4–5 mm, glabrous;

stamens 10–12 mm.

oblong or oblong-lanceoloid, compressed, 10–20 × 5–9 mm, puberulent.

brown, black, or mottled, subglobose, compressed, 2–3 × 2–3 mm;

hilum ovate, 0.5–1 mm.