Mammillaria marcosii

Mammillaria marcosii
Date: 1996 October 31
Location: Guanajuato

This member of the Stylothelae group of Mammillaria was described by Glass and Fitzmaurice in the January 1997 issue of the Cactus and Succulent Journal (U.S.).

It is seen here growing with Astrophytum ornatum.