Flora of North America species comparison

angled, erect, basally branched 0–2 times, 2–5 dm.

angled to narrowly winged, sprawling, often branched mid stem (at or just proximal to flowering nodes), 3–10 dm.

2–4 cm;

tendrils simple or branched, sometimes prehensile;

stipules linear, 5–15 × 1–2 mm, much smaller than leaflets;

leaflets 6 or 8, scattered, blades ovate to lanceolate, 15–45 × 4–10 mm, surfaces glabrous throughout or puberulent abaxially.

6–10 cm;

tendrils well developed;

stipules lanceolate to linear, 10–20 × 1–8 mm, much smaller than leaflets;

leaflets 8–12, usually paired, sometimes scattered, ovate to lanceolate, 20–45 × 15–25 mm, glabrous.

2–4-flowered, 7–12 cm.

7–15-flowered, 5–15 cm.

18–20 mm;

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

corolla blue-purple, banner erect, blade longer than claw, wings equal to keel (held above keel);

ovary glabrous.

12–14 mm;

calyx lobes unequal, lateral lobes linear-triangular, shorter than or equal to tube;

corolla cream-white, banner erect, blade longer than claw, wings equal to keel;

ovary glabrous.

40–50 × 8–10 mm, short-stipitate.

40–70 × 4–9 mm.

= 14.

= 14.