Flora of North America species comparison

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

erect or sprawling, slender, 0.5–3 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.

1–2 cm;

tendrils simple;

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

leaflets 4–8, blades ovate-obovate to elliptic-linear, 8–16 × 1–3 mm, apex acute to truncate-emarginate, apiculate, surfaces glabrous or sparsely pubescent, hairs long.

usually (1 or)2(–4)-flowered, 0–1 cm.

undeveloped, 1(or 2)-flowered, 0–1 cm.

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.

5–8 mm;

calyx base symmetric, lobes equal, subequal to tube;

corolla violet, fading white, banner stenonychioid, blade longer than claw, glabrous;

style compressed abaxially, pubescent apically, tufted abaxially.

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

stipe absent.

dark brown to black, linear, 15–25 × 3–4 mm, oblique-tipped, glabrous;

stipe absent.

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.

6 or 7, reddish maroon, grayish brown, or blackish, quadrate, 1.5–2 mm diam.;

hilum minute.

= 10, 12.