Taxonomic status: Synonym

homotypic synonyms:
Eriosyce curvispina (Bertero ex Colla) Katt.; Hildmannia curvispina (Bertero ex Colla) Kreuz. & Buining; Horridocactus curvispinus (Bertero ex Colla) Backeb.; Malacocarpus curvispinus (Bertero ex Colla) Britton & Rose; Pyrrhocactus curvispinus (Bertero ex Colla) A. Berger;

protologue: Mem. Reale Accad. Sci. Torino 37: 75 (1833)
URL protologue: https://archive.org/stream/#page/75/mode/2up

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