Flora of North America species comparison

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

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

2–6 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.

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

1–3-flowered, 0 cm.

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.

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.

tawny to brown, oblong, 25–39 × 5–9 mm, oblique-tipped, glabrous or pubescent;

stipe to 4–5 mm.

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

stipe to 3–4 mm.

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

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

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.

= 14.