Echinocactus tubiflorus (Pfeiff.) Hook.
      
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2 369695 Echinocactus tubiflorus (Pfeiff.) Hook. [80 226630 Cereus tubiflorus Pfeiff.] Cactaceae
W. Curtis, Bot. Mag., vol. 65 [ser. 2, vol. 12]: t. 3627 (1839) [n.a.]