Although no subspecies are recognised, four topodemes (geographically isolated populations) have been described, as there is significant variation in the shape of both adult and juvenile leaves between populations.
Meskipun tidak ada subspesies yang diakui, empat topodem (populasi yang terisolasi secara geografis) telah dideskripsikan, karena ada perbedaan signifikan dalam bentuk dari daun dewasa dan muda antara populasi.