Mammillaria deherdtiana ssp deherdtiana First description by Farwig, Cact. Succ. J. (US) 41(1): 28 (1969)
Slow growing species that will form irregular clumps with time. Be sure to limit water and fertilizers more than with faster growers. Spine formation is enhanced by bright light. Considered more difficult than the average Mammillaria species.
John Pilbeam (1999) – Mammillaria The Cactus File Handbook – page 84.
Edward F. Anderson (2001) – The Cactus Family – page 414.
First description by Farwig, Cact. Succ. J. (US) 41(1): 28 (1969)
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