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.

sprawling or twining, gland-dotted, rarely viscid, villous or villosulous, hairs silvery or grayish and silvery intermixed.

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 early deciduous, ovate or lanceolate, 4–6 × 1.5–2 mm, apex acute or acuminate, surfaces villosulous;

petiole 1–7 mm, rarely viscid, villous or villosulous;

leaflet blades obovate to ovate-lanceolate or ovate-rhombic to rhombic, 20–130 × 15–100 mm, leathery, gland-dotted, base rounded to obtuse or cuneate, apex acute to acuminate, surfaces villous or villosulous abaxially, villous or villosulous adaxially, rarely glabrescent.

racemes, longer than leaves, 2–20 cm.

racemes, longer than leaves, 5–30 cm.

1–5 mm.

1–2 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 4–5 mm, villosulous, often viscid, tube 2–2.5 mm, lobes lanceolate, laterals 2–3 mm, lengths to 2.5 times tube, adaxials 1–1.5 mm;

corolla green-yellow, streaked purple or brown;

banner orbiculate, 8–9 × 6–7 mm, emarginate, villosulous, gland-dotted;

wings oblong, 6–7 × 2–2.5 mm, often gland-dotted, puberulent apically;

keel 6–8 × 3–3.5 mm, puberulent apically;

stamens 8–9 mm.

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

brown or greenish, widely ovoid-oblong, subinflated, constricted, 20–30 × 7–12 mm, gland-dotted, rarely viscid, densely villosulous to puberulent.

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

red and black, subglobose to ovoid, plump, 5–8 × 4–6 mm.

= 22.