Herbs perennial, from rhizome, glabrous except calyx ciliate. Stems angled, sprawling or climbing, basally branched 0–3 times, 3–8 dm. Leaves (2–)3–10 cm; tendrils well developed; stipules somewhat foliose, ovate-lanceolate, 15–35 × 5–20 mm, sometimes equal to distal leaflets; leaflets (5 or)6(–8), usually paired, blades broadly ovate to lan­ceolate, (20–)25–65 × 10–35(–42) mm, surfaces glabrous. Inflorescences 4–10(–13)-flowered, 3–12 cm. Flowers 10–15 mm; calyx lobes unequal, lateral lobes lanceolate, usually longer than tube; corolla cream-white, banner erect, blade longer than claw, wings equal to keel; ovary glabrous. Legumes 30–70 × 4–7 mm. 2n = 14.

Phenology: Flowering Apr–Jul.
Habitat: Moist woodlands, clearings, thickets, glades, meadows.
Elevation: 0–1500 m.

Distribution

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Alta., B.C., Man., N.W.T., Nunavut, Ont., Que., Sask., Yukon, Alaska, Idaho, Ill., Ind., Iowa, Mich., Minn., Mont., Nebr., N.J., N.Y., N.Dak., Ohio, Pa., S.Dak., Vt., Wash., W.Va., Wis., Wyo.

Discussion

Selected References

None.

Lower Taxa

None.