Epiphyllum

Scientific classification

Kingdom: Plantae
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Cactaceae
Subfamily: Cactoideae
Tribe: Hylocereeae
Genus: Epiphyllum

Epiphyllum, “upon the leaf” in Greek), is a genus of 19 species of epiphytic plants in the cactus family, native to Central America. Common names for these species include climbing cacti, orchid cacti and leaf cacti.

                         – Wikipedia.