Hydatellales
Hydatellales is a botanical name for an order of flowering plants. In the Cronquist system, 1981, the name was used for an order placed in the subclass Commelinidae in class Liliopsida [=monocotyledons]. The order consisted of one family only:
Similarly the Dahlgren system recognised this order (with the same circumscription and placed it in superorder Commelinanae in subclass Liliidae [=monocotyledons].