Shrubs, not armed. Lvs pinnately 3-foliolate, petiolate; lateral veins thin and ± straight to leaflet margin; stipules free, membranous, caducous. Infl. terminal, racemose; bracts and bracteoles membranous, early caducous. Calyx campanulate; 2 upper teeth connate into a 2-toothed lip; 3 lower teeth free, narrow. Corolla yellow. Stamens connate into a tube split above; anthers uniform, dorsifixed, versatile. Style incurved, glabrous; stigma terminal. Pod 2-valved, ± straight and flattened, dehiscent, few- to many-seeded; sutures thickened; seeds strophiolate.