Borneodendron aenigmaticum is a species of tree in the family Euphorbiaceae of the monotypic genus Borneodendron. Its name means "enigmatic Borneo-plant"; so-called because it is a monotypic taxon and is endemic to north Borneo (Sabah). The species is specialised to ultramafic soils. It is found in numerous protected areas and is not considered threatened. References Monotypic Euphorbiaceae genera Crotonoideae Endemic flora of Borneo Flora of Sabah