Flora of North America species comparison

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

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

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.

5–8-flowered, 10–18 cm.

5–10-flowered, 4–16 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.

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 × 4–8 mm.

15–35 × 5–7 mm.

= 14.

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