Duparquetia orchidacea is a liana which is native to tropical west Africa. It is the only species in the genus Duparquetia. The distinctive structure of its flowers and wood, and phylogenetic studies, suggest that it may be relatively basal within the Fabaceae.
^ abcdPrenner, G.; Klitgaard, B. B. (2008), "Towards unlocking the deep nodes of Leguminosae: Floral development and morphology of the enigmatic Duparquetia orchidacea (Leguminosae, Caesalpinioideae)", American Journal of Botany, 95 (11): 1349–65, doi:10.3732/ajb.0800199, PMID21628144