Mammillaria matudae var. serpentiformis Fittkau in Cact. Suc. Mex. 16: 42. 1971 Mammillaria matudae var. serpentiformis Fittkau in Cact. Suc. Mex. 16: 42. 1971Taxon for this nameMammillaria matudae var. serpentiformis Fittkau
