Flora of North America species comparison

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

sprawling or climbing, slender, 3–15 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.

2–8 cm;

tendrils mucronate on proximal leaves, simple or branched on distal leaves;

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

leaflets 10–24, blades elliptic-oblong or oblanceolate to linear, 10–30 × 2–6 mm, apex obtuse, surfaces glabrous or abaxial puberulent.

usually (1 or)2(–4)-flowered, 0–1 cm.

7–20-flowered, 3–10 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.

8–12 mm;

calyx base symmetric, lobes subequal, shorter than tube;

corolla white with blue tip, banner pandurate, blade equal to or longer than claw, glabrous;

style compressed adaxially, 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.

reddish brown, narrowly oblong, 15–30 × 4–5 mm, obliquely long-tipped, glabrous;

stipe to 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.

5–8 violet brown to black, compressed-subglobose or subglobose, 2–4 mm diam.;

hilum encircling 3/4 circumference of seed.