Family: Cactaceae
[Mammillaria grahamii var. grahamii , more..., Mammillaria grahamii var. oliviae (Orcutt) L. Benson, Mammillaria microcarpa Engelm., Mammillaria microcarpa subsp. grahamii (Engelm.) Mottram, Mammillaria microcarpa var. auricarpa W.T. Marsh., Mammillaria microcarpa var. milleri (Britton & Rose) W.T. Marshall, Mammillaria milleri (Britt. & Rose) Bödecker, Mammillaria milleri var. grahamii (Engelm.) Neutel., Mammillaria oliviae Orcutt]
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