Flora of North America species comparison

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

broadly winged, climbing, basally branched 1–3 times, 8–20 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.

2–4 cm, rachises winged as the stem;

tendrils well developed;

stipules lanceolate, 15–25 × 5–10 mm, smaller than leaflets;

leaflets 2, blades ovate or obovate to lanceolate, 25–60 × 5–35 mm, surfaces glabrous.

4–10(–13)-flowered, 3–12 cm.

1–3-flowered, 4–20 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.

20–30 mm;

calyx lobes equal, lateral lobes deltate, usually shorter than tube;

corolla rose-purple, banner erect, blade longer than claw, wings longer than keel;

ovary glabrous, style rotated 90° from ovary axis.

30–70 × 4–7 mm.

70–100 × 8–12 mm, narrowly winged on abaxial suture.

= 14.

= 14.