Flora of North America species comparison

erect, suberect, decumbent, procumbent, or twining, viscid, hirsute, hairs yellowish.

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

trifoliolate;

stipules persistent, linear to narrowly lanceolate, 3–9 × 0.5–1.5 mm, apex acute to acuminate, surfaces hirsute;

petiole 15–55 mm, hirsute;

leaflet blades lanceolate to obovate-oblong or ovate-deltate, 15–70 × 10–60 mm, membranous or leathery, gland-dotted, often viscid, base obtuse to rounded or truncate, margins ciliate, slightly revolute, apex acute to acuminate, surfaces strongly reticulate and sparsely to densely hirsute abaxially, strigulose to strigose adaxially.

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.

racemes, equal to or longer than leaves, 2.5–20 cm.

racemes, shorter than leaves, 1–4 cm.

1–3 mm.

2–5 mm.

calyx 4–7 mm, hirsute, tube 1.5–2 mm, lobes lanceolate, laterals 2–2.5 mm, lengths to 2.5 times tube, adaxials 1.5–3 mm;

corolla yellow, striped reddish brown or purple;

banner widely ovate to obovate, 7–10 × 4–5 mm, slightly apiculate, hirtellous and gland-dotted;

wings narrowly oblong, 6.5–9 × 1.5–2 mm, gland-dotted, puberulent apically;

keel 6.5–9 × 2–3 mm, glabrous;

stamens 6–9 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.

oblong-ovoid, compressed, 16–26 × 6–8 mm, often viscid, long-hirsute to puberulent, hairs intermixed, glabrescent.

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

greenish brown or mottled, widely ovoid to subglobose, compressed, 4–5 × 3–4 mm.

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

= 22.