Flora of North America species comparison

erect or sprawling, slender, 0.5–3 dm.

sprawling or climbing, slender, 3–15 dm.

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.

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.

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

7–20-flowered, 3–10 cm, shorter to longer than subtending leaf rachis.

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.

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.

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

stipe absent.

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

stipe to 2 mm.

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

hilum minute.

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

hilum encircling 3/4 circumference of seed.

= 10, 12.