Flora of North America species comparison

erect, sprawling, or climbing, slender to robust, 2–6 dm.

erect or sprawling, slender, 0.5–3 dm.

2–6 cm;

tendrils simple or branched;

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

leaflets 6–16, blades oblong to lanceolate-linear, 8–20 × 1–5 mm, apex obtuse to truncate-emarginate, abaxial surface sparsely pubescent, hairs long, pustulose-based, adaxial glabrous.

1–2 cm;

tendrils simple;

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

leaflets 4–8, blades ovate-obovate to elliptic-linear, 8–16 × 1–3 mm, apex acute to truncate-emarginate, apiculate, surfaces glabrous or sparsely pubescent, hairs long.

1–3-flowered, 0 cm.

undeveloped, 1(or 2)-flowered, 0–1 cm.

18–25 mm;

calyx base symmetric, lobes unequal, abaxial lobe subequal to tube;

corolla pale to bright yellow, banner stenonychioid, blade much longer than claw, glabrous;

style compressed abaxially, pubescent apically, tufted abaxially.

5–8 mm;

calyx base symmetric, lobes equal, subequal to tube;

corolla violet, fading white, banner stenonychioid, blade longer than claw, glabrous;

style compressed abaxially, pubescent apically, tufted abaxially.

reddish black, elliptic, 25–35 × 7–14 mm, oblique-tipped, pilose, hairs tuberculate-based;

stipe to 3–4 mm.

dark brown to black, linear, 15–25 × 3–4 mm, oblique-tipped, glabrous;

stipe absent.

3–9, blackish and ± mottled, or velvety to entirely black, compressed-globose, 3 mm diam.;

hilum whitish, linear, encircling 1/6–1/5 circumference of seed.

6 or 7, reddish maroon, grayish brown, or blackish, quadrate, 1.5–2 mm diam.;

hilum minute.

= 14.

= 10, 12.