Flora of North America species comparison

broadly winged, climbing, basally branched 1–3 times, 8–30 dm.

2–6 cm, rachises winged;

tendrils well developed;

stipules lanceolate, 10–25 × 2–6 mm, smaller than leaflets;

leaflets 2, blades ovate or obovate, 15–50 × 10–40 mm, surfaces glabrous or sparsely pustulose-hirsute.

2–4-flowered, 10–20 cm.

20–25 mm;

calyx lobes equal, lateral lobes linear-triangular to lanceolate, equal to tube;

corolla white, pink, purple, violet, or blue, banner erect, blade much longer than claw, wings longer than keel;

ovary densely pustulose-hirsute, style rotated 90° from ovary axis.

50–70 × 8–15 mm.

= 14.