Flora of North America species comparison

usually prostrate or twining, rarely erect, strigose or hirsute, hairs tawny or silvery.

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

usually trifoliolate, proximalmost sometimes unifoliolate;

stipules persistent, ovate or ovate-lanceolate, 3–10 × 1.5–3 mm, apex acute or long-acuminate;

petiole 10–65 mm, hirsute;

leaflet blades ovate to ovate-rhombic and orbiculate, or obovate to obovate-elliptic and elliptic, 20–60 × 10–70 mm, leathery, gland-dotted, base obtuse to rounded or subcordate, apex usually acute, obtuse, or rounded, rarely retuse, surfaces hirtellous or strigulose to loosely strigose abaxially, glabrous or strigose adaxially.

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, shorter than leaves, 1–4 cm.

racemes, longer than leaves, 1–6 cm.

2–5 mm.

filiform, 2–4 mm, viscid.

calyx 9–12 mm, hirsute or hirtellous, tube 1–2 mm, lobes widely lanceolate or ovate-lanceolate, laterals 6–10 mm, adaxials 3–5 mm;

corolla deep yellow or orange-yellow;

banner broadly-obovate, 8–10.5 × 5–6 mm, emarginate, glabrous or puberulent, with a pair of internal callosities;

wings oblong, 7–8 × 2–3 mm, glabrous;

keel 7–8 × 2–3 mm, glabrous;

stamens 7–9 mm.

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.

ovoid-oblong, compressed, 14–20 × 6–9 mm, gland-dotted, puberulent and hirsute, hairs intermixed.

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

brown, black, or mottled, subglobose, compressed, 3–4 × 3–4 mm.

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

= 22.