Flora of North America species comparison

angled, sprawling or climbing, basally branched 0–3 times, 3–8 dm.

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

(2–)3–10 cm;

tendrils well developed;

stipules somewhat foliose, ovate-lanceolate, 15–35 × 5–20 mm, sometimes equal to distal leaflets;

leaflets (5 or)6(–8), usually paired, blades broadly ovate to lanceolate, (20–)25–65 × 10–35(–42) 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.

4–10(–13)-flowered, 3–12 cm.

usually 1-flowered, 1–4 cm.

10–15 mm;

calyx lobes unequal, lateral lobes lanceolate, usually longer than tube;

corolla cream-white, banner erect, blade longer than claw, wings equal to keel;

ovary glabrous.

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.

30–70 × 4–7 mm.

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

= 14.

= 14.