Flora of North America species comparison

sprawling or climbing, slender, 2–15 dm.

erect or climbing, slender, 3–10 dm.

4–11 cm;

tendrils branched;

stipules much smaller than leaflets, ligulate, without nectariferous patch;

leaflets 10–16, blades elliptic-oblong to linear, 7–30 × 1–11 mm, apex obtuse, abaxial surface glabrous, adaxial often sparsely long-pubescent.

6–10 cm;

tendrils branched;

stipules much smaller than leaflets, semisagittate, with nectariferous patch abaxially;

leaflets 8–16, blades ovate or elliptic to lanceolate, 20–35 × 5–15 mm, apex obtuse to truncate-emarginate, abaxial surface sparsely pubescent, adaxial glabrous.

8–25-flowered, 2–15 cm, shorter to longer than subtending leaf rachis.

2–7-flowered, to 1 cm, shorter than subtending leaf rachis.

4–7 mm;

calyx base symmetric, lobes equal, usually shorter than tube;

corolla cream-white with purple-tipped keel, banner pandurate, blade equal to claw, glabrous;

style compressed adaxially, pubescent evenly for some length along style.

8–15 mm;

calyx base symmetric, lobes equal, shorter than tube;

corolla blue-violet and white, banner oblong, blade equal to claw, glabrous;

style compressed abaxially, pubescent apically, tufted abaxially.

reddish brown, oblong, 20–35 × 5–8 mm, acute-tipped, glabrous;

stipe 1–2 mm.

black, elliptic, 20–35 × 5–8 mm, tip up-curved, glabrate;

stipe to 2 mm.

5–9, purplish black, compressed-subglobose, 2–3 mm diam.;

hilum encircling 1/4 circumference of seed.

3–6, yellowish, reddish, gray or greenish gray with blackish spots or entirely black, globose, 3–4 mm diam.;

hilum encircling 1/2–3/4 circumference of seed.

= 12, 14.