Flora of North America species comparison

narrowly to broadly winged, sprawling or climbing, basally branched 0–4 times, 2–10 dm.

winged, sprawling or climbing, basally branched 0–3 times, 2–10 dm.

1–6 cm;

tendrils well developed;

stipules ovate-lanceolate to linear, 5–25 × 1–10 mm, much smaller than leaflets;

leaflets 4–8, paired, blades lanceolate to linear, 15–75 × 2–20 mm, surfaces glabrous, glabrate, or pubescent.

0.5–2 cm, rachises winged as the stem;

tendrils well developed;

stipules lanceolate, 10–20 × 2–6 mm, sometimes as wide as leaflets;

leaflets 2, blades linear, 20–50 × 1–6 mm, surfaces glabrous.

2–7-flowered, 3–15 cm.

usually 1-flowered, 1–4 cm.

10–15 mm;

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

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

ovary glandular-pubescent.

10–12 mm;

calyx lobes equal, lateral lobes linear-triangular, 2–3 times longer than tube;

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

ovary glabrous, style rotated 90° from ovary axis.

25–60 × 4–8 mm.

20–40 × 5–10 mm, broadly winged on abaxial suture.

= 14.

= 14.