Emorycactus polycephalus (Engelm. & J.M.Bigelow) Doweld in Succulenta (Netherlands) 75: 270. 1996
Emorycactus polycephalus in Succulenta (Netherlands) 75: 270. 1996
is new combination for Echinocactus polycephalus, Pacif. Railr. Rep., Bot. 4: 31. 1857
Emorycactus polycephalus in Succulenta (Netherlands) 75: 270. 1996