Flora of North America species comparison

usually prostrate or twining, rarely subascending, puberulent to strigulose or villosulous, hairs silvery.

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

trifoliolate;

stipules persistent, linear or linear-lanceolate, 1.5–3 × 0.5 mm, acute to acuminate;

petiole 5–35 mm, puberulous, strigulose, or villosulous;

leaflet blades lanceolate-ovate, 5–45 × 20–25 mm, leathery, gland-dotted, base obtuse or subcordate, margins revolute, apex acute or obtuse, surfaces puberulent, strigulose, or villosulous.

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.

1(2 or 3) simple flowers per axil, shorter than leaves, 0.6–1.5 cm.

racemes, longer than leaves, 5–30 cm.

1–6 mm.

1–2 mm.

calyx 3–5 mm, villous or villosulous, tube 1.5–2.5 mm, lobes subulate, laterals 1–3.5 mm, lengths to 2.5 times tube, adaxials 0.5–2 mm;

corolla yellow, veined brown;

banner widely ovate, 5–7 × 3.5–5 mm, apex emarginate, puberulent;

wings oblong to ovate, 5–6 × 1–2 mm, glabrous;

keel 5–6.5 × 2–2.5 mm, glabrous;

stamens 4–6 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.

oblong, compressed, 15–25 × 4–6 mm, puberulent-hirtellous, hairs intermixed.

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

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

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

= 22.