Mammillaria gaumeri (Britton & Rose) Orcutt [ Neomammillaria gaumeri Britton & Rose]
      
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6 639020 Mammillaria gaumeri (Britton & Rose) Orcutt [125 695726 Neomammillaria gaumeri Britton & Rose] Cactaceae
N.L. Britton, J.N. Rose, Cact., vol. 4 : t. 8 (1923) [M.E. Eaton]