Mammillaria heyderi subsp. meiacantha (Engelm.) D.R.Hunt, Mammillaria Postscripts 6: 10. 1997
Mammillaria heyderi subsp. meiacantha, Mammillaria Postscripts 6: 10. 1997
is new combination for Mammillaria meiacantha in Proc. Amer. Acad. Arts 3: 263. 1856
Mammillaria heyderi subsp. meiacantha, Mammillaria Postscripts 6: 10. 1997