Flora of North America species comparison

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

not winged, sprawling, branched along trailing stems several 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.

0.5–2 cm;

tendrils well developed;

stipules filiform-linear, 5–10 × 1–3 mm, much smaller than leaflets;

leaflets 2, blades lanceolate, 10–40 × 5–15 mm, surfaces glabrous.

5–8-flowered, 10–18 cm.

4–6-flowered, 6–15 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, equal to tube;

corolla reddish, banner erect, blade longer than claw, wings equal to keel;

ovary glabrous, style rotated 90° from ovary axis.

30–50 × 4–8 mm.

20–30(–40) × 3–6 mm.

= 14.

= 14.