Flora of North America species comparison

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

erect, stout, 3–7 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.

3–8 cm;

tendrils simple on proximal leaves, branched on distal leaves;

stipules foliose, approaching leaflets in size, semicordate, with nectariferous patch abaxially;

leaflets 2–6, blades obovate to elliptic, 30–60 × 20–35 mm, margins rarely serrate, apex obtuse, surfaces sparsely pubescent.

usually (1 or)2(–4)-flowered, 0–1 cm.

1–4-flowered, to 1 cm, much 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.

15–30 mm;

calyx base symmetric, lobes unequal, to 2 times as long as tube;

corolla purple, drying black, banner stenonychioid, blade subequal to claw, glabrous;

style compressed abaxially, pubescent apically, tufted abaxially.

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

stipe absent.

black, linear, 30–70 × 10–15 mm, oblique-tipped, glabrous, sutures with pustulate-based bristles;

stipe absent.

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.

4–6, purplish violet to black, subglobose or compressed-globose, 5–6 mm diam.;

hilum whitish, short, oblong, encircling 1/8 circumference of seed.

= 14.