See text Hatiora is a small genus of epiphytic cacti which belongs to the tribe Rhipsalideae within the subfamily Cactoideae of the Cactaceae.

They are small, with a diameter of about 2 cm (0.8 in), actinomorphic (radially symmetrical), bell-shaped and always coloured (yellow, yellow-orange or pink).

de Candolle recognized the distinctness of this species and transferred it to a new genus Hariota, named after Thomas Hariot, a 16th-century botanist.

[2] According to Anderson,[2] the confusion among the Rhipsalideae was not clarified until work by Wilhelm Barthlott and Nigel Taylor in 1995, which placed six species in Hatiora, divided between two subgenera.

[4] Phylogenetic studies using DNA have led to a modification of the Barthlott and Taylor classification and the three species of Hatiora they placed in subgenus Rhipsalidopsis have been transferred out of the genus.

[5] In the taxonomic treatments of the genus by Barthlott & Taylor (1995)[4] and Hunt (2006),[7] Hatiora was divided into two subgenera with six accepted species, plus a hybrid created in cultivation.