Perennial twining herbs. Leaves pinnately 3-foliolate; stipules deltoid, basifixed, late deciduous; stipels linear, persistent. Racemes axillary; peduncles short, or flowers clustered. Bracts ovate, apex caudate; bracteoles late deciduous. Calyx campanulate, hirsute with white or yellow hairs, 2-lipped, upper lip bifid, lower lip 3-lobed. Corolla glabrous, petals clawed; standard orbicular or oblong, base with short auricles, without appendages; wings and keel obovate-oblong, with narrow auricles; keel obtuse. Stamens diadelphous; filaments unequal; anthers uniform. Ovary linear, subsessile, ca. 10-ovuled; disk present; style linear; stigma funnel-shaped. Legumes linear-oblong, flattened, not septate, densely bristly-pilose with yellowish hairs. Seeds 3-10, oblong, without aril; hilum central.
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