Flora of North America species comparison

angled to narrowly winged, erect, sprawling, or climbing, basally branched 0–4 times, 1–10 dm.

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

3–15 cm;

tendrils usually well developed, branched or unbranched;

stipules sagittate-ovate, 7–35 × 7–30 mm, as large as basal leaflets;

leaflets 6–12, usually scattered, blades ovate to lanceolate, 15–55 × 5–35 mm, surfaces glabrous throughout or pubescent abaxially.

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.

4–9-flowered, 4–15 cm.

5–10-flowered, 4–16 cm.

12–29 mm;

calyx lobes unequal, lateral lobes linear-triangular, longer than tube;

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

ovary eglandular and glandular-pubescent.

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.

35–65 × 6–12 mm.

15–35 × 5–7 mm.

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