Flora of North America species comparison

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

sprawling, 2–6 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.

3–6 cm;

tendrils usually branched;

stipules much smaller than leaflets, semisagittate;

leaflets 12–20, blades narrowly elliptic to linear, 7–12 × 1–5 mm, apex blunt to acute and mucronulate, surfaces glabrous or puberulent.

usually (1 or)2(–4)-flowered, 0–1 cm.

2–5-flowered, 2–5 cm, somewhat shorter 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.

4–5 mm;

calyx base symmetric, lobes unequal, lateral lobes equal to tube;

corolla blue, banner pandurate, blade 2 times length of 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, oblong-subrhomboidal, 12–16 × 5–7 mm, glabrous; short-stipitate.

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.

2, purplish black, compressed-globose, 4–5 mm diam.;

hilum encircling 1/6 circumference of seed.