Cal-tube hemispheric, slightly oblique, the lobes triangular-acuminate, subequal; standard rotund to reniform; wings and keel-pet strongly auriculate at base, the wings falcate, oblong, the keel up curved; stamens 10, diadelphous, the uppermost one wholly free; ovary elongate; style hairy distally, hooked at the summit; shrubs with odd-pinnate lvs and medium-sized yellow fls in axillary racemes. 25, Old World.

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

©The New York Botanical Garden. All rights reserved. Used by permission.