Coryphantha pycnacantha (Mart.) Lemaire [ Mammillaria pycnacantha Mart.]
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Coryphantha pycnacantha (Mart.) Lemaire [ Mammillaria pycnacantha Mart.] [Cactaceae]
Nova Acta Phys.-Med. Acad. Caes. Leop.-Carol. Nat. Cur., vol. 16(): : t. 17 (1833) [unsigned?]