Flora of North America species comparison

erect-ascending or climbing, slender to robust, 3–10 dm.

sprawling or climbing, filiform, 3–8 dm.

3–8 cm;

tendrils simple or branched;

stipules foliose, approaching leaflets in size, semisagittate, with nectariferous patch abaxially;

leaflets 8–14, blades ovate-oblong, narrowly elliptic, or linear [obovate], 15–30 × 5–15 mm, apex obtuse to truncate-emarginate, distinctly apiculate, surfaces hirsute.

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.

usually (1 or)2(–4)-flowered, 0–1 cm.

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

10–30 mm;

calyx base symmetric, lobes subequal, ± equal to tube;

corolla violet-purple, lavender, or whitish, banner stenonychioid, blade shorter than or 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.

yellow to brown, or reddish brown to black, linear, 25–60 × 3–11 mm, oblique-tipped, glabrous or pubescent;

stipe absent.

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

stipe to 1–2 mm.

4–12, usually greenish gray to maroon or black, rarely yellowish white, globose or ± compressed, 3–5 mm diam.;

hilum encircling 1/6–1/5 circumference of seed.

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

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