Flora of North America species comparison

ascending or erect, tomentulose to hirtellous, hairs silvery to tawny.

prostrate (twining distally), hirtellous, hairs grayish.

usually trifoliolate, proximalmost sometimes unifoliolate;

stipules caducous or persistent, lanceolate to linear-lanceolate, 3–12 × 1.5–3.5 mm, apex acuminate;

petiole 5–35 mm, densely canescent-tomentose abaxially, villous adaxially;

leaflet blades oblong or ovate to rhombic-ovate, elliptic, or obovate, 20–50(–60) × 10–40(–50) mm, leathery, gland-dotted, base obtuse, subcordate, or broadly cuneate, apex acute, obtuse, or rounded, minutely apiculate, surfaces puberulent, strigulose, or villosulous.

usually unifoliolate, distalmost rarely trifoliolate;

stipules persistent, ovate-lanceolate, 3–5 × 1.5–2 mm, apex acuminate;

petiole 20–40 mm, densely hirsute;

leaflet blades reniform or orbiculate, 20–50 × 20–70 mm, leathery, gland-dotted, base truncate or subcordate, apex obtuse, obscurely mucronulate, surfaces reticulate and tomentose-woolly abaxially, rugose and finely strigose adaxially.

racemes, shorter than leaves, axillary ones 1.5–4(–5) cm, terminal ones 6.5–23 cm.

in clusters on peduncles, shorter than leaves, 2–6 cm.

1–3 mm.

3–8 mm.

calyx 6–9 mm, hirtellous, tube 1.5–2.5 mm, lobes narrowly lanceolate to linear-subulate, laterals 4.5–7.5 mm, lengths 3+ times tube, adaxials 2–2.5 mm;

corolla yellow or bright yellow;

banner orbiculate, 6–9 × 5–7 mm, emarginate, glabrous;

wings oblong, 6–8 × 1.5–2.5 mm, glabrous;

keel 5–7.5 × 2–2.5 mm, glabrous;

stamens 5.5–7.5 mm.

calyx 14–16 mm, hirsute, tube 2 mm, lobes lanceolate or elliptic, laterals 12–14 mm, adaxials 5 mm;

corolla yellow-orange;

banner obovate, 10–12 × 5–6 mm, emarginate, puberulent, with a pair of internal callosities;

wings oblong, 9–11 × 2–2.5 mm, glabrous;

keel 9–10 × 2–2.5 mm, glabrous;

stamens 9–10 mm.

ovoid-oblong, compressed, 15–20 × 5–7 mm, hirtellous and puberulent, hairs intermixed.

ovoid-oblong, compressed, 10–18 × 5–9 mm, gland-dotted, tomentose.

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

brown, black, or mottled, subglobose, compressed, 3.5–4 × 3.5–4 mm.

, herbaceous.

= 22.