Taxonomic status: Unresolved

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

protologue: Kaktus-ABC : 264 (1935)
URL protologue: https://www.cactuspro.com/lecture/Backeberg-Curt/KaktusABC/page-3.en.html

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