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Flowers in terminal or leaf-opposed racemes, the inflorescence sometimes contracted and subumbelliform, flowers rarely solitary; cleistogamous flowers with reduced parts and producing small pods often present.
Calyx nearly as long as the corolla, deeply divided, the 2 upper lobes free or shortly united into a upper lip, the 3 lower ones united into a 3-toothed lower lip.
Corolla yellow; standard obovate to subcircular, shortly clawed, not appendaged; wings often with rows of folds between the veins; keel slightly incurved, obtuse.
Stamens usually united into a closed tube, rarely split above, with longer basifixed anthers alternating with shorter dorsifixed anthers.
Leaves, digitately 3-foliolate; stipules small to large, free or sometimes united to each other or to the petiole.
Ovary sessile or subsessile, many-ovulate, tapering upward to the upcurved style; stigma small, terminal.
Pod linear-oblong, laterally compressed, sometimes constricted between the seeds, dehiscent.
Herbs, undershrubs or small shrubs, often with a soft indumentum.
Seeds usually oblong-ovate, compressed with a small sunken hilum.
