Flora of North America species comparison

angled, sprawling, basally branched 0–4 times, 1–4 dm.

narrowly winged, erect to climbing, basally branched 0–several times, 2–8 dm.

1–3 cm;

tendrils flattened bristles;

stipules ovate to lanceolate, 10–27 × 5–12 mm, often larger than leaflets;

leaflets 4 or 6, paired, blades obovate to oblanceolate, 10–20 × 4–8 mm, surfaces densely villous.

9–13 cm;

tendrils well developed;

stipules lanceolate, 10–30 × 3–15 mm, sometimes equal to distal leaflets;

leaflets 9–12, scattered, blades lanceolate, 30–50 × 5–15 mm, surfaces glabrous.

4–8-flowered, 3–10 cm.

8–12-flowered, 7–10 cm.

13–15 mm;

calyx lobes equal, lateral lobes deltate, equal to or shorter than tube;

corolla dark purple, banner erect, blade longer than claw, wings longer than keel;

ovary densely pubescent.

9–12 mm;

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

corolla cream-white, banner erect, blade longer than claw, wings equal to keel;

ovary glabrous.

20–30 × 9–13 mm.

30–40 × 3–5 mm.

= 28.

= 14.