Taxonomic status: Unresolved

homotypic synonyms:
Cactus horridus Colla; Hildmannia horrida (Colla) Kreuz. & Buining; Pyrrhocactus horridus (Colla) Backeb.;

protologue: Kakteenkunde 1940: 51 (1940)
URL protologue: https://www.cactuspro.com/biblio_fichiers/pdf/Kakteenkunde/Kakteenkunde1940_O.pdf

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