Taxonomic status: Unresolved

homotypic synonyms:
Echinofossulocactus pentacanthus (Lemaire) Britton & Rose; Stenocactus pentacanthus (Lemaire) A. Berger ex A.W. Hill;

protologue: Cact. Aliq. Nov. : 27 (1838)
URL protologue: https://archive.org/stream/#page/27/mode/2up

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