Cactus Plant. Arizona Snowcap is a hybrid of the Thimble Cactus with dense, white, clustering spines!!
The Arizon Snowcap or Mammillaria Gracilis Fragilis Montrose is a hybrid of the Thimble Cactus. This is a special montrose cultivar of the
Source : http://www.etsy.com//listing/222049923/cactus-plan
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