Flora of North America species comparison

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

angled, erect, branched 0–2 times basally or from proximal nodes, 0.5–2 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.

1–2 cm;

tendrils reduced to bristles;

stipules lanceolate to linear, 5–15 × 1–5 mm, much smaller than leaflets;

leaflets 4 or 6, paired, blades ovate to obovate, 10–25 × 5–10 mm, surfaces glabrous.

2–4-flowered, 10–20 cm.

2–4-flowered, 4–6 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.

14–17 mm;

calyx lobes unequal, lateral lobes deltate, shorter than tube;

corolla bicolored lavender and white, banner erect, blade longer than claw, wings longer than keel, 1–3 mm;

ovary glabrous.

50–70 × 8–15 mm.

25–30 × 8–10 mm, stipitate.

= 14.