Lianas. Apical vegetative bud dormant during anthesis and fruit set. Stipules and stipels persistent. Racemes in axil of terminal leaves forming a leafy panicle; bracts longer than corresponding flowers, caducous. Bracteoles present. Calyx campanulate, subtruncate, bilabiate. Corolla standard reflexed at base, calluses absent; wings and keel ± equally long; wings free from keel. Stamens diadelphous, vexillary staminal filament distinct from other 9. Ovary glabrous, with 9-12 ovules. Legume linear, cylindric, raised over seeds, dehiscing along adaxial suture; exocarp fleshy but papery when dry; endocarp thin, leathery, lining seed cavity. Seeds ellipsoid; hilum rather elongated, surrounded by prominent rim; radicle folded.
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