Belongs to the monotypic genus.

Woody vine; stems glabrous. Leaves opposite; simple. Inflorescence axillary, in racemes; flowers bisexual. Fruit schizocarpic, splitting into three samaras; samaras with two wings, one lateral wing fully developed and one dorsal wing folded.

Madagasikaria differs in fruit morphology. Phylogenetically, it is related to Microsteira and Rhynchophora (Davis, 2002).