Flora of North America species comparison

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

prostrate or twining, tomentulose, hairs silvery or grayish.

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.

trifoliolate;

stipules persistent, subulate, 1–2 × 0.5–1 mm, apex acute to acuminate, surfaces tomentulose;

petiole 4–30 mm, tomentulose;

leaflet blades obovate or elliptic-lanceolate, 10–45 × 5–20 mm, leathery, gland-dotted, base obtuse, apex usually rounded or obtuse, rarely acuminate, surfaces strongly reticulate and densely grayish tomentulose abaxially, densely grayish tomentulose adaxially.

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

racemes, shorter than or equal to leaves, 2–6 cm.

1–3 mm.

2–4 mm, viscid.

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 5–7 mm, tomentose, viscid, tube 2–2.5 mm, lobes lanceolate, laterals 4–5 mm, lengths to 2.5 times tube, adaxials 2.5–5 mm;

corolla pale yellow;

banner suborbiculate, 8–10 × 6–7 mm, emarginate, puberulent, gland-dotted;

wings oblong, 8–9 × 2.5–3 mm, glabrous;

keel 8–9.5 × 2–2.5 mm, glabrous;

stamens 8–10 mm.

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

ellipsoid, compressed, 15–17 × 4–6 mm, yellow-hirsute and puberulent, hairs intermixed.

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

brown, black, or mottled, ovoid-ellipsoid, compressed, 2.5–4 × 2.5–3 mm;

hilum linear, 1–1.5 mm.