Epiphyllum rhombeum Pfeiff., Enum. Diagn. Cact.: 130. 1837 Epiphyllum rhombeum Pfeiff., Enum. Diagn. Cact.: 130. 1837is correct spelling for Epiphyllum rhombum Pfeiff., Enum. Diagn. Cact.: 130. 1837Taxon for this nameEpiphyllum rhombeum Pfeiff.