Epiphyllum ruestii (Weing.) F.M.Knuth, Kaktus-ABC: 163. 1936 ["1935"] Epiphyllum ruestii (Weing.) F.M.Knuth, Kaktus-ABC: 163. 1936 ["1935"]is new combination for Phyllocactus ruestii Weing. in Monatsschr. Kakteenk. 24: 123. 1914Taxon for this nameEpiphyllum ruestii (Weing.) F.M.Knuth