Pfeiffera monacantha (Griseb.) P.V.Heath in Calyx 4(4): 158. 1994
Pfeiffera monacantha in Calyx 4(4): 158. 1994
is new combination for Rhipsalis monacantha in Abh. Königl. Ges. Wiss. Göttingen 24: 140. 1879
Pfeiffera monacantha in Calyx 4(4): 158. 1994