Disocactus Lindl. in Edwards's Bot. Reg.: 31. 1845 sec. Cruz & al. 2016
  • =Cereus subsect. Heliocereus A.Berger in Rep. (Annual) Missouri Bot. Gard. 16: 78. 1905 syn. sec. Korotkova & al. 2017
  • Heliocereus (A.Berger) Britton & Rose in Contr. U.S. Natl. Herb. 12: 433. 1909 syn. sec. Korotkova & al. 2017



Phylogenetics: Disocactus was newly circumscribed by Cruz & al. (2016) as the results of their phylogenetic study where Disocactus sensu Barthlott (1991) and Hunt (2006) was found as polyphyletic, with Aporocactus forming a separate lineage and Disocactus including three erstwhile Epiphyllum species.A
A. Korotkova, N. 2021: Revisions of Deamia, Disocactus, Epiphyllum, Hatiora, Kimnachia, Lepismium, Leuenbergeria, Lymanbensonia, Pereskia, Pfeiffera, Pseudorhipsalis, Rhipsalidopsis, Rhipsalis, Schlumbergera, Selenicereus, Strophocactus, Weberocereus, and various other names – In: Korotkova N. & al., Cactaceae at Caryophyllales.org – a dynamic online species-level taxonomic backbone for the family. – Willdenowia 51(2): 250-270