Discocactus Pfeiff. [Cactaceae-Cactoideae-Hylocereeae]
10 Bahia, Mato Grosso, Bolivia lowland, Paraguay, Goias, Minas Gerais

family Cactaceae 3 subfamilies 1750 species Cactoideae Opuntioideae Pereskioideae

subfamily Cactoideae 9 tribes 1359 species Browningieae Cacteae Cereeae Echinocereeae Hylocereeae Notocacteae Pachycereeae Rhipsalideae Trichocereeae

tribe Hylocereeae 7 genera 91 species Discocactus 10 Bahia, Mato Grosso, Bolivia lowland, Paraguay, Goias, Minas Gerais [9] Disocactus 10 trop. Mexico, C Am., Colombia, Venezuela, Peru, Ecuador, Amazonas, Roraima, Acre [82] Epiphyllum 10 trop. Mex., C Am., Colombia, Venez., Ecuador, Peru, Guyana, Surinam, French Guyana, Trinidad, Cuba, Brazil, Bolivia, Paraguay [79] Hylocereus 18 WI, C Am., Venez., Guyana, Surinam, French Guyana, Colombia, trop. Mex., Peru, Ecuador [47] Pseudorhipsalis 6 Mex., C Am., WI, trop. S Am. [8] Selenicereus 28 Texas, Mex, C Am., WI, Uruguay, trop. S Am., subtrop. Brazil [44] Weberocereus 9 trop. Mex., C Am., esp. Costa Rica, Colombia, Ecuador, [8]