Mammillaria hertrichiana
The standing of this species has been questionable for some times, and in Hunt's latest rationalization of the genus it is provisionally accepted, althought close to M.standley.
It is herein regarded as inseparable from M.standley
Mammillaria - John Pilbeam pag.329
Mammillaria hertrichiana LAU 619
LAU 619 - Encinal - Sonora - Mexico


