Mammillaria heyderi subsp. gummifera (Engelm.) D.R.Hunt, Mammillaria Postscripts 6: 10. 1997
Mammillaria heyderi subsp. gummifera, Mammillaria Postscripts 6: 10. 1997
is new combination for Mammillaria gummifera, Mem. Tour N. Mexico: 105. 1848
Mammillaria heyderi subsp. gummifera, Mammillaria Postscripts 6: 10. 1997