Flora of North America species comparison

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

sprawling or climbing, filiform, 3–8 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.

3–5 cm;

tendrils simple;

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

leaflets 2–6, blades usually broadly elliptic to oblong or oblanceolate, sometimes linear, 7–18 × 2–8 mm, apex obtuse, surfaces glabrous.

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

2–8-flowered, 2–5 cm, shorter to longer than 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.

5–6 mm;

calyx base symmetric, lobes equal, much shorter than tube;

corolla white to bluish, banner pandurate, blade 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.

brown to black, broadly oblong, 8–15 × 3–5 mm, oblique-tipped, glabrous;

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.

1 or 2, purplish black, compressed-globose, 3 mm diam.;

hilum encircling 1/2–3/4 circumference of seed.