Flora of North America species comparison

trailing or twining, gland-dotted, soft-hirsute, hairs silvery.

trifoliolate;

stipules persistent, narrowly lanceolate to lanceolate, 3–4 × 0.5–1.5 mm, acuminate, surfaces hirtellous;

petiole 10–60 mm, hirsute;

leaflet blades ovate, 20–60 × 15–45 mm, membranous, gland-dotted abaxially, base obtuse, rounded, or truncate, apex acute or long-acuminate, surfaces hirsute abaxially, glabrous or hirsute adaxially.

racemes, longer than leaves, 1–6 cm.

filiform, 2–4 mm, viscid.

calyx 3.5–5 mm, hirsute-viscid, tube 2.5–5 mm, lobes broadly lanceolate, laterals 1.5–2 mm, lengths to 2.5 times tube, adaxials 0.5–1 mm;

corolla yellow;

banner obovate, 5–8 × 3–4.5 mm, marginate, puberulent, gland-dotted;

wings oblong, 4–5 × 1–1.5 mm, glabrous;

keel 4.5–5 × 2-2.5 mm, glabrous;

stamens 3.5–5 mm.

brown, acinaciform, compressed, 25–40 × 5–9 mm, tapered toward base, densely puberulent, hairs long, scattered.

brown to red, reniform, barely compressed, 4–6 × 3–3.5 mm.