Flora of North America species comparison

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

erect, stout, 5–20 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.

1–7 cm;

tendrils absent;

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

leaflets 2–6, blades elliptic to ovate-lanceolate, 40–100 × 10–30 mm, apex obtuse, surfaces glabrous.

usually (1 or)2(–4)-flowered, 0–1 cm.

2–4-flowered, to 1 cm, much shorter 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.

20–30 mm;

calyx base symmetric, lobes unequal, longer than tube;

corolla white with purple mottling, 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, 80–200 × 10–30 mm, oblique-tipped, sparsely pubescent;

stipe 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.

2–4, purplish, greenish, or black, sometimes spotted gray, globose and 7–9 mm diam., or strongly compressed and 12–35 mm diam.;

hilum large, terminal, blackish, encircling 1/6–1/5 circumference of seed.

= 12, 14.