Calopogonium Desv.

Herbaceous or woody climbers or trailers. Leaves pinnately 3-foliolate; stipels present. Flowers blue or violet, small, in fascicles arranged in short to long axillary pseudoracemes, or in axillary subsessile fascicles; bracts and bracteoles small, deciduous. Calyx campanulate or shortly tubular, 5-lobed, the upper pair free or ± connate to form a 2-toothed lip. Standard obovate; wings narrow, adhering to the obtuse keel. Ovary sessile, many-ovuled. Fruit pods linear, ± compressed, 2-valved, dehiscent, the outer surface transversely furrowed, giving the pod the appearance that it might break into segments. Seeds compressed-globose or oblong.

Worldwide: Species 5-6, in the warmer part of the Americas.

Burundi: 1 taxon.