Melocactus guanensis Xhonneux & Fern.Alonso in Revista Acad. Colomb. Ci. Exact. 26: 359. 2002
Melocactus guanensis in Revista Acad. Colomb. Ci. Exact. 26: 359. 2002
is basionym for Melocactus mazelianus f. guanensis in Cactology 2: 7. 2010
Type: Colombia, Santander, Barichara, Barichara-Guane, alt. 1700 – 1900 m, 3 Dec 2001, G. M. Xhonneux & al. 2042 (COL: 478453, 478458, 478459 - on 3 sheets?)