Photo: The final post of new Mammillaria is, by far, my favorite: Mammillaria heyderi. M. heyderi is native... http://t.co/hcENaBRW

— Dustin Miller (@zoopunkwild) 2012.10.20

Photo: The auction spoils: Opuntia hybrid cholla, Ferocactus hamatacanthus, and Mammillaria heyderi. These... http://t.co/5yq8m6EA

— Dustin Miller (@zoopunkwild) 2012.10.14