Coryphantha pycnacantha (Mart.) Lemaire [ Mammillaria pycnacantha Mart.]
      
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6 278522 Coryphantha pycnacantha (Mart.) Lemaire [125 639574 Mammillaria pycnacantha Mart.] Cactaceae
L.K.G. Pfeiffer, F. Otto, Abbild. Beschr. Cact. (Coloured version), vol. 1 : p. 26, t. 26 (1839)