Eligmocarpus is a genus of flowering plants in the family Fabaceae.

[3] Currently, it occurs only on the edge of a relatively humid spiny forest in Petriky.

The trees' wood is used as timber by local communities, which has contributed heavily to the species' decline.

Prior to human colonization, the species had used streams and rivers to carry its seeds into new biomes, in dry or spiny forests on limestone or sandy soils in humid to subarid climates.

The species has a very low rate of seed production (about 1 seed/kg of fruit) and its seed germination is limited (<5% if not treated, increasing to 43% when soaked in cold water for 48 hours).