Pseudopilocereus machrisii (E.Y.Dawson) Buining & Brederoo in Succulenta (Netherlands) 56: 90. 1977
Pseudopilocereus machrisii in Succulenta (Netherlands) 56: 90. 1977
is new combination for Cephalocereus machrisii in Los Angeles County Mus. Contr. Sci. 10: 1, pl. 1–3. 1957