Flora of North America species comparison

usually prostrate or twining, rarely ascending, rarely viscid, glabrous, puberulent, or villosulous, hairs silvery or grayish, spreading or reflexed.

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

trifoliolate;

stipules persistent, linear to lanceolate, 1–6 × 1–2 mm, apex acuminate, surfaces puberulent to villosulous;

petiole 4–100 mm, glabrous, tomentulose, or villosulous;

leaflet blades rhombic-orbiculate, rhombic, subrhombic, or ovate, 30–90 × 5–70 mm, membranous or nearly leathery, gland-dotted, base obtuse to rounded, cuneate, or truncate, apex acuminate to obtuse, surfaces glabrous, puberulent, or sparsely to densely villosulous abaxially, glabrous or finely strigose, villosulous, or puberulent 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, longer than leaves, 2–20 cm.

racemes, longer than leaves, 5–20 cm.

1–5 mm.

1–3 mm.

calyx 3–6 mm, puberulent or villosulous, tube 1.5–2 mm, lobes lanceolate, laterals 1.5–4 mm, lengths to 2.5 times tube, adaxials 0.5–1 mm;

corolla yellow, veined purple or brown;

banner orbiculate-ovate, 4–6 × 3–5 mm, emarginate, puberulent, gland-dotted;

wings narrowly oblong, 4.5–5 × 1–2 mm, narrowly gland-dotted, puberulent apically;

keel 5–6 × 2–3 mm, glabrous;

stamens 5–7 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.

falcate to oblong-ovoid, compressed, 9–20 × 3–5 mm, glabrous, puberulent, or villosulous.

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

grayish, brown, black, or mottled, ovoid-reniform, plump, 3–4 × 2–3 mm.

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

= 22.

= 22.