Mammillaria occidentalis var. sinalensis R.T.Craig, Mammill. Handb.: 169. 1945
Mammillaria occidentalis var. sinalensis, Mammill. Handb.: 169. 1945
is basionym for Mammillaria mazatlanensis f. sinalensis in Succulenta (Netherlands) 65: 119. 1986
is basionym for Mammillaria patonii var. sinalensis, Cactaceae 5: 3291. 1961
Type: Type: México, Sinaloa, Arroyo de Ibarra, near Rosario 1940, E, Baxter s.n., not preserved