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. Cruz & al. 2016
  • Heliocereus (A.Berger) Britton & Rose in Contr. U.S. Natl. Herb. 12: 433. 1909 syn. sec. Cruz & al. 2016



Phylogenetics: Disocactus was newly circumscribed by Cruz et. al (2016, Willdenowia 46: 145-164) as the results of their phylogenetic study. Disocactus sensu (Barthlott 1991, Barthlott & Hunt 1993 in Kubitzki, Hunt 2006) was found as polyphyletic, with Aporocactus forming a separate lineage and therefore reinstated as a genus (see also note there), while Disocactus in the new circumscription also included three erstwhile Epiphyllum species. [Editorial]