Synonyms
Epiphyllum stenopetalum (C.F.Först.) Britton & Rose
Epiphyllum ruestii (Weing.) F.M.Knuth
Phyllocactus marginatus Salm-Dyck
Phyllocactus ruestii Weing.
Epiphyllum strictum (Lem.) Britton & Rose
Phyllocactus stenopetalus Salm-Dyck
Epiphyllum strictum var. ruestii (Weing.) Borg
Phyllocactus strictus Lem.