Flora of North America species comparison

erect, trailing, or climbing, slender to stout, to 20 dm.

sprawling or climbing, slender, 2–8 dm.

2–8 cm;

tendrils simple or branched;

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

leaflets 8–18, blades ovate or elliptic to linear, 3–44 × 1–19 mm, apex obtuse to truncate-emarginate, or apiculate, surfaces glabrous or finely pubescent.

2–6 cm;

tendrils simple or branched (absent on proximal leaves);

stipules foliose, semisagittate, without nectariferous patch;

leaflets 2 or 4 proximally, 4–8 distally, blades ovate proximally, linear distally, 5–30 × 1–5 mm, apex obtuse to acute, surfaces glabrous.

3–9-flowered, 2–8 cm, shorter than or equal to subtending leaf rachis.

1- or 2-flowered, 1–5 cm, ± shorter than subtending leaf rachis.

12–25 mm;

calyx base symmetric, lobes subequal, shorter than tube;

corolla usually bluish purple, rarely white, banner oblong, blade equal to claw, glabrous;

style compressed abaxially, pubescent apically, tufted abaxially.

5–8 mm;

calyx base symmetric, lobes unequal, shorter than tube;

corolla pale blue to lavender, banner pandurate, blade equal to claw, glabrous;

style compressed adaxially, pubescent apically.

tawny to brown, oblong, 25–39 × 5–9 mm, oblique-tipped, glabrous or pubescent;

stipe to 4–5 mm.

reddish brown, narrowly oblong-falcate, 15–30 × 4–5 mm, apiculate, glabrous;

stipe absent.

number not known, olive-brown to deep violet-brown, subglobose, 3–4 mm diam.;

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

6–8, blackish purple, subglobose, 2 mm diam.;

hilum encircling 5/8 circumference of seed.