Flora of North America species comparison

angled, sprawling to erect, basally branched 0–3 times, 2–8 dm.

not winged, sprawling or climbing, branched along trailing stems several times, 4–10 dm.

3–8 cm;

tendrils well developed, often branched;

stipules lanceolate, 8–12 × 2–5 mm, much smaller than leaflets;

leaflets 6–10, usually paired, blades ovate, 20–40 × 10–20 mm, surfaces glabrous.

1–4 cm;

tendrils bristlelike to well developed;

stipules ovate-lanceolate, 5–38 × 3–15 mm, sometimes equal to leaflets;

leaflets 2, blades lanceolate, 5–40 × 1–10 mm, surfaces glabrous or pubescent.

2–5-flowered, 4–7 cm.

5–10-flowered, 4–16 cm.

15–20 mm;

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

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

ovary glabrous.

8–12 mm;

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

corolla yellow, banner erect, blade equal to claw, wings equal to keel;

ovary glabrous or pubescent.

30–50 × 5–15 mm.

15–35 × 5–7 mm.

= 9, 14, 16, 21, 28, 42.