Flora of North America species comparison

erect, trailing, or climbing, slender to stout, to 20 dm.

sprawling or climbing, slender, 10–20 dm.

2–8 cm;

tendrils simple or branched;

stipules much smaller than leaflets, semisagittate, without nectariferous patch;

leaflets 8–18, blades ovate or elliptic to linear, 3–44 × 1–19 mm, apex obtuse to truncate-emarginate, or apiculate, surfaces glabrous or finely pubescent.

3–6 cm;

tendrils branched;

stipules much smaller than leaflets, semisagittate, without nectariferous patch;

leaflets 10–16, blades ovate-oblong to linear, 10–30 × 4–9 mm, apex obtuse, surfaces villous.

3–9-flowered, 2–8 cm, shorter than or equal to subtending leaf rachis.

2–12-flowered, 3–12 cm, equal to subtending leaf rachis.

12–25 mm;

calyx base symmetric, lobes subequal, shorter than tube;

corolla usually bluish purple, rarely white, banner oblong, blade equal to claw, glabrous;

style compressed abaxially, pubescent apically, tufted abaxially.

13–18 mm;

calyx base gibbous, lobes unequal, usually equal to tube;

corolla white at base, purple apically, banner pandurate, blade shorter than or equal to claw, glabrous;

style compressed adaxially, pubescent apically.

tawny to brown, oblong, 25–39 × 5–9 mm, oblique-tipped, glabrous or pubescent;

stipe to 4–5 mm.

tawny, narrowly oblong, 25–35 × 8–12 mm, oblique-tipped, densely villous;

stipe to 1–2 mm.

number not known, olive-brown to deep violet-brown, subglobose, 3–4 mm diam.;

hilum encircling 1/4–1/3 circumference of seed.

4 or 5, velvety black with prominent white hilum, compressed-subglobose, 4–5 mm diam.;

hilum encircling 1/5 circumference of seed.

= 14.