Flora of North America species comparison

trailing or climbing to semi-erect, strigose to hirsute or villous [hirsutulous], hairs spreading to deflexed.

alternate, odd-pinnate;

stipules present, caducous, linear-lanceolate, 5–11 mm;

petiolate;

leaflets 3, alternate, stipels caducous, blade margins entire, toothed, or lobed, surfaces strigose or glabrous.

4–11-flowered, axillary or terminal, pseudoracemes, fasciculate, nodose;

bracts and bracteoles present, caducous, setaceous.

papilionaceous;

calyx tubular, 8–12 mm, lobes 5;

corolla white, pink, or purplish;

stamens 10, diadelphous;

anthers basifixed, relatively small, dehiscing apically;

style glabrous;

stigma relatively small, terminal.

legumes, pedicellate, sides straight, strongly compressed, oblong, dehiscent, constricted between seeds, septate, pubescent or glabrescent.

4–10, somewhat flattened, 4-angled with rounded corners or suborbicular [reniform];

hilum lateral.

, perennial, herbaceous, 2–5(–10) m, unarmed;

roots tuberous.

= 11.