Mammillaria mazatlanensis var. occidentalis (Britton & Rose) Neutel. in Succulenta (Netherlands) 65: 119. 1986
Mammillaria mazatlanensis var. occidentalis in Succulenta (Netherlands) 65: 119. 1986
is new combination for Neomammillaria occidentalis, Cactaceae 4: 161–162, f. 179. 1923