Flora of North America species comparison

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

usually trailing or twining, rarely suberect, hirsute, hairs tawny.

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.

usually trifoliolate, proximalmost sometimes unifoliolate;

stipules deciduous, subulate-lanceolate, 2.5–7.5 × 2–2.5 mm, apex acuminate;

petiole 20–60 mm, hirsute;

leaflet blades oval to ovate-rhombic or orbiculate, 30–80 × 10–60 mm, leathery, gland-dotted abaxially, base obtuse or subcordate, apex obtuse, acute, or abruptly acuminate, often mucronate, surfaces villous abaxially, strigose adaxially.

racemes, shorter than leaves, 1–4 cm.

racemes, longer than leaves, 5–20 cm.

2–5 mm.

1–3 mm.

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 8–15 mm, hirsute, tube 2–3 mm, lobes lanceolate, laterals 7–10 mm, lengths 3+ times tube, adaxials 4 mm;

corolla yellow;

banner obovate, 9.5–14 × 6–7 mm, emarginate, hirtellous, gland-dotted;

wings oblong, 8.5–13 × 2–2.5 mm, glabrous;

keel 8.5–13 × 3–4 mm, glabrous;

stamens 8–12 mm.

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

ovoid-oblong, compressed, 15–20 × 7–9 mm, villous and puberulent, hairs intermixed.

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

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

= 22.

= 22.