Herbs annual. Stem erect or procumbent. Leaves paripinnate with rachis terminating in a tendril or mucro; stipules obliquely lanceolate; leaflets 2- to many paired, obovate, obovate-oblong, or obovate-lanceolate, margin entire. Inflorescence a 1- to many-flowered raceme. Flowers small. Calyx deeply divided into equal teeth at least 2 × as long as tube. Corolla white or otherwise colored; standard obovate; wings and keel with claw and auricle. Stamens diadelphous; staminal tube oblique at apex; filaments filiform. Ovary shortly stalked or subsessile; style dorsally compressed, pubescent on upper side. Legume short, strongly compressed. Seeds 1 or 2, brown, lenticular.
Inflorescences axillary, few-flowered, racemose or flowers solitary; bracts small, deciduous; bracteoles absent
Slender suberect or spreading annual herbs
Leaves mostly paripinnate, the rhachis terminating in an awn or a simple, rarely branched, tendril, rarely imparipinnate; leaflets in 2-several pairs, entire; stipules linear to ovate, entire, dentate or semisagittate; stipels absent
Ovary subsessile, 2-ovuled; style somewhat flattened, with a longitudinal row of short hairs on the inside
Vexillary stamen free; anthers uniform
Corolla small, white, blue or violet; standard obovate or almost round, the claw short and broad; wings obliquely obovate or oblong, attached to the keel; keel shorter than the wings, somewhat inflated and longitudinally plicate, the apex acute or shortly beaked
Calyx 5-lobed; lobes elongate, subulate, subequal
Seeds distinctly compressed; funicle dilated into a thin aril, separated from mature seed.
Pod strongly compressed, 1–2-seeded, the valves mostly thin and papery
Pod strongly compressed, 1–2-seeded.
Ovary subsessile, 2-ovuled; style somewhat flattened, distally pubescent on the inner side.
Inflorescences axillary, few-flowered, racemose or flowers solitary; bracts small, deciduous; bracteoles absent.
Calyx 5-lobed; lobes subequal, subulate, at least twice as long as the tube.
Leaves usually paripinnate, the rhachis terminating in a simple or rarely a branched tendril, or an awn, rarely imparipinnate; leaflets 2–several on each side of the rhachis, opposite or alternate, entire, folded flat lengthwise in bud; stipules linear to ovate or semi-sagittate, entire or dentate.
Corolla small, white, bluish or violet; standard obovate to almost round, cuneate to the base; wings oblong or obovate, adnate to the keel; keel shorter than the wings.