It is now the sole species in Polyscias subgenus Cuphocarpus. Four other species, formerly in Cuphocarpus, are now in Polyscias subgenus Maralia.
Currently, it is the sole representative of the Polyscias subgenus Cuphocarpus. Meanwhile, four other species that were previously part of this group have been reclassified into the Polyscias subgenus Maralia.