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A monotypic African genus closely allied to Ornithopus L. but differing in the fruit segments being dehiscent and in the dorsal suture being persistent.
Fruit curved, made up of 2–5 spherical 1-seeded articles each of which splits into 2 valves; dorsal suture persistent.
Leaves imparipinnate; petiole absent or very short; stipels absent or very short; stipules reduced to glands.
Stamens diadelphous, the vexillary one entirely free; free parts of filaments flattened; anthers uniform.
Flowers in axillary pedunculate umbels; bracts and bracteoles minute, soon deciduous.
Calyx tube and hypanthium obconic, the teeth subequal, narrowly triangular.
Corolla glabrous, the petals with claws about equalling their blades.
Seeds spherical, minutely warty; hilum circular, minute.
Ovary stipitate, inserted laterally on the hypanthium.
Annual herb.