Phyllocactus caulorrhizus Lem. in Jard. Fleur. 1: misc. 6. 1851 Phyllocactus caulorrhizus Lem. in Jard. Fleur. 1: misc. 6. 1851is basionym for Epiphyllum caulorrhizum (Lem.) G.Don, Encycl. Pl., ed. 3: 1380. 1855Taxon for this namePhyllocactus caulorrhizus Lem.