Mammillaria heyderi Muehlenpfordt Engl.: horsecrippler, little nipple cactus, ball cactus, cream cactus, cream pincushion, flat cream pincushion, pancake pincushion. Bot. syn.: Mammillaria gummifer Engelm., Mammillaria macdougalii Rose, Mammillaria meiacantha Engelm.
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