Flora of North America species comparison

angled, erect, sprawling, or climbing, basally branched 0–3 times, 1–5 dm.

2–9 cm;

tendrils usually well developed, sometimes reduced to a single bristle;

stipules lanceolate, 5–12 × 1–3 mm, much smaller than leaflets;

leaflets 6–12, scattered, blades elliptic to narrowly so, 8–70 × 3–8 mm, surfaces glabrous or villous.

2–5-flowered, 5–15 cm.

13–20 mm;

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

corolla pinkish to deep blue-purple, banner erect, blade nearly 2 times as long as claw, wings equal to keel;

ovary glabrous.

30–40 × 6–8 mm.