Flora of North America species comparison

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

sprawling or climbing, slender to robust, to 20 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.

2–8 cm;

tendrils usually branched;

stipules foliose, semisagittate, without nectariferous patch;

leaflets 10–28, blades narrowly oblong or elliptic to linear, 10–25 × 2–8 mm, apex obtuse to acute, surfaces glabrate to pilose.

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

10–50-flowered, 4–20 cm, equal to or longer 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.

8–16 mm;

calyx base symmetric to slightly gibbous, lobes unequal, pilose, lateral ones equal to tube;

corolla usually blue-violet or purple, sometimes lilac or whitish, banner pandurate, blade equal to or longer than 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.

tawny, broadly oblong, 15–30 × 6–8 mm, oblique-tipped, glabrous;

stipe to 1.5 mm.

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

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

4–8, dark grayish to purplish brown, sometimes mottled purple, globose to ellipsoid-ovoid, 2.5–4 mm diam.;

hilum encircling 1/5–1/3 circumference of seed.

= 12, 14, 21, 22, 28.