Flora of North America species comparison

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

sprawling or climbing, slender to robust, to 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.

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.

usually (1 or)2(–4)-flowered, 0–1 cm.

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

8–16 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.

yellow to brown, or reddish brown to black, linear, 25–60 × 3–11 mm, oblique-tipped, glabrous or pubescent;

stipe absent.

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

stipe to 1.5 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.

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.