Flora of North America species comparison

broadly winged, sprawling or climbing, basally branched 1–5 times, 8–20 dm.

winged, sprawling or climbing, basally branched 0–3 times, 2–10 dm.

2–5 cm, rachises broadly winged;

tendrils well developed, branched;

stipules lanceolate, 30–40 × 7–15 mm, at least 1/2 width of stem, much smaller than leaflets;

leaflets 2, blades lanceolate-elliptic, 30–120 × 7–50 mm, surfaces glabrous.

0.5–2 cm, rachises winged as the stem;

tendrils well developed;

stipules lanceolate, 10–20 × 2–6 mm, sometimes as wide as leaflets;

leaflets 2, blades linear, 20–50 × 1–6 mm, surfaces glabrous.

5–15-flowered, 10–33 cm.

usually 1-flowered, 1–4 cm.

15–20 mm;

calyx lobes unequal, lateral lobes linear-triangular, shorter than tube;

corolla purple, magenta, pink, or white, banner erect, blade longer than claw, wings equal to keel;

ovary densely glandular-pubescent, style rotated 90° from ovary axis.

10–12 mm;

calyx lobes equal, lateral lobes linear-triangular, 2–3 times longer than tube;

corolla reddish purple, banner erect, blade equal to claw, wings equal to keel;

ovary glabrous, style rotated 90° from ovary axis.

50–110 × 5–10 mm.

20–40 × 5–10 mm, broadly winged on abaxial suture.

= 14.

= 14.