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.

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

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.

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, longer than leaves, 2–20 cm.

racemes, longer than leaves, 1–6 cm.

1–5 mm.

filiform, 2–4 mm, viscid.

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 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.

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

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

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

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

= 22.