Climbing or prostrate, rarely erect, herbs or subshrubs. Stipules present. Leaves 1-or 3-foliolate; leaflets usually with conspicuous resinous gland-dots beneath. Flowers spreading. Calyx 5-lobed, lobes unequal, the upper pair ± joined. Corolla frequently yellow, lined with brownish-purple. Ovary (1-)2-ovulate. Pods 3-4 × as long as broad, almost circular to narrowly oblong, flattened, often falcate, frequently glandular and velvety. Seeds flattened-spherical or subreniform; funicle inserted at middle of the circular hilum.