Flora of North America species comparison

angled, sprawling or climbing, sometimes branched at flowering nodes, 2–6 dm.

angled, erect, sprawling, or climbing, often branched mid stem 1–4 times, 2–6 dm.

5–9 cm;

tendrils usually well developed;

stipules lanceolate to linear, 8–12 × 1–5 mm, much smaller than leaflets;

leaflets 4–8, scattered, blades usually linear, rarely lanceolate, 30–80 × 1–20 mm, surfaces glabrous.

2–6 cm;

tendrils absent to well developed, 0–3 cm, usually not branched;

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

leaflets 4–8, often paired, blades ovate, 15–30 × 5–20 mm, surfaces glabrous, or linear, 30–70 × 1–10 mm, surfaces glabrous or pubescent.

5–8-flowered, 10–18 cm.

5–15-flowered, 2–7 cm.

8–15 mm;

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

corolla white to blue-orchid, banner erect, blade equal to claw, wings equal to keel;

ovary glabrous.

7–13 mm;

calyx lobes unequal, lateral lobes often linear-triangular, sometimes lanceolate, shorter than tube;

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

ovary glabrous.

30–50 × 4–8 mm.

40–60 × 4–7 mm.

= 14.

= 14.