Flora of North America species comparison

trailing to climbing, strigose to pilose, glabrescent, hairs not uncinate.

to 10+ m. Leaves: stipules deltate, 3–4 × 1–1.5 mm;

stipels striate, linear-deltate, 2–3.5 × 1 mm;

leaflet blades ovate to subhastate, lateral blades obliquely ovate, 5–8 × 3–4 cm, base trinervate, apex acute to acuminate, surfaces glabrous or glabrate, hairs subadpressed.

alternate, odd-pinnate;

stipules present, caducous;

petiolate, petiole longer than rachis, both canaliculate;

leaflets 3, stipels present, often caducous, blade margins entire, surfaces glabrous or glabrate.

50–60+-flowered, axillary, pseudoracemes, floral nodes relatively conspicuous, glandular;

bracts present, often caducous, bracteoles early caducous, proximal to calyx, sometimes subpeltate.

20–40 cm, rachis with 10+ floral nodes, each with 5 or 6 flowers;

bracts subulate, 3 mm.

12–18 cm, covered with antrorse trichomes.

mostly shorter than calyx tube.

3–6 mm;

bracteoles ovate-elliptic, 2 mm, 3- or 4-veined.

papilionaceous;

calyx campanulate, lobes 5;

corolla greenish yellow to purple, glabrous;

banner usually longer than wings and keel, with 2 prominent appendages on inner face;

wing blades oblong, not projected beyond distal bend of keel;

keel petals connate along upper margin, not forming gibbosity or hump, incurved, and beaked;

stamens 10, diadelphous;

anthers basifixed, pollen tricolporate;

ovary oblong, nectary disc at base;

style slightly curved, distally bearded;

stigma terminal or subterminal.

1 cm;

calyx purplish, 3–5 mm, lobes subequal, lateral lobes ovate, ciliate;

banner greenish outside, inner face purple, 9–10 mm, length less than width, base auriculate and unguiculate, apex emarginate;

wings purple, widely oblong, 8–9 mm, base auriculate, short-clawed;

keel light purple, curved, 7.5–8.5 mm, base auriculate, short-clawed, apex slightly twisted to right;

ovules 2 or 3.

legumes, stipitate, terete or subcylindric, widely oblong, leathery, with rostrate, curved beak, slightly compressed between seeds, dehiscent, glabrous or puberulent;

endocarp white-spongy.

light brown with dark patterns, 4–6 × 2–3 cm, dehiscent first on adaxial suture, slightly twisting, valves pulverulent.

2 or 3[–6], spherical [oblong to reniform or spherical-prismatic];

hilum linear-oblong, circumlinear, elongated 1/2 to nearly entire length of seed.

1 cm diam.;

hilum 0.8–1.1 mm.

, perennial, unarmed.

= 11.

= 22.