Flora of North America species comparison

angled, erect, sprawling, or climbing, basally branched 0–several times, 1–6 dm.

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

2–10 cm;

tendrils mucronate (less than 1 cm) to well developed;

stipules linear, 5–25 × 1–8 mm, much smaller than leaflets;

leaflets 4–12, usually scattered, blades broadly ovate to lanceolate or linear, (17–)20–110 × 2–30(–37) mm, surfaces usually glabrous, rarely finely pubescent.

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.

2–10-flowered, 3–15 cm.

5–10-flowered, 4–16 cm.

12–22 mm;

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

corolla blue-purple to pink-purple or white, banner erect, blade longer than 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.

20–30(–45) × 5–10 mm.

15–35 × 5–7 mm.

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