Flora of North America species comparison

prostrate, solid, strigulose or hirsute.

twining, solid, sericeous.

stipules spreading, widely deltate or ovate, 4.5–8 × 2–2.7 mm;

petiole 1.7–6 cm, strigose or hirsute;

rachis 5–9 mm;

stipels subulate, 1–5.5 mm;

leaflets papery, blades orbiculate, ovate to broadly ovate or obovate, base attenuate or cuneate, apex acute or obtuse, surfaces strigose abaxially, hirtellous adaxially;

lateral blades 2–4.3 × 1.6–2.9 cm, sometimes 2-lobed, terminal blades 2.3–4.7 × 1.6–2.8 cm.

stipules retrorse, lanceolate or ovate, 5–6 × 1.8–2 mm;

petiole 3.5–8 cm, canescent;

rachis 5–8 mm;

stipels linear, 1.2–2.5 mm;

leaflets papery, blades elliptic or ovate, base cuneate or obtuse, apex acute, surfaces often canescent abaxially, strigose adaxially;

lateral blades 3.3–4 × 2.7–3.3 cm, 2-lobed, terminal blades often hastate, 4.5–4.7 × 3–4.3 cm.

14–25 cm (cleistogamous inflorescence over soil, 1.5–2.2 mm, flowers 3.5 mm, corolla whitish), axes adpressed-pilose;

tufts of bracts at base of peduncle mostly caducous;

extrafloral nectaries inconspicuous at nodes;

bracts and bracteoles subulate or lanceolate.

26–36 cm, axes pilose;

tufts of bracts at base of peduncle persistent, 5.5 mm, lanceolate, canescent;

extrafloral nectaries conspicuous at nodes;

bracts and bracteoles lanceolate or subulate.

0.7–1 mm.

1–2 mm.

1 cm;

calyx campanulate, 3.5–4.5 mm, hirtellous, calyx lobes as long as tube or longer;

corolla salmon-orange;

banner orbiculate, 5.5–7.5 × 4.5–6.5 mm;

wings oblong-ovate, 5.1–10 × 3.3–6.6 mm;

keel 4–8 mm;

ovary nectary disc distally even;

ovules 6.

1.7–3 cm;

calyx campanulate, 6.2–8 mm, canescent, calyx lobes shorter than tube;

corolla purple-black;

banner oblong, 13–17 × 9–10.4 mm;

wings obovate, 13–24 × 8–14.3 mm;

keel 9–16 mm;

ovary nectary disc distally oblique;

ovules 13.

pendent, oblong-falcate, 1.6–2.5 × 2.7–3 cm, valves not twisting at dehiscence.

patent, linear, 7–10 × 0.3–0.4 cm, valves twisting at dehiscence.

4 or 5, oblong, 2.9–3 × 2–2.2 mm.

12 or 13, oblong, 3.5–5.2 × 2–3.2 mm.

, perennial;

root elongate.

= 22.