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6 695862 Neomammillaria schelhasei (Pfeiff.) Britton & Rose (Pfeiff.) Britton & Rose [Mammillaria schelhasei Pfeiff.]
K.M. Schumann, M G├╝rke, F. Vaupel, Bl. Kakt., vol. 3 : t. 170 (1900-1905) [J. Pohl]
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