Taxonomic status: Accepted

homotypic synonyms:
Cactus sulcatus (Engelm.) Small; Mammillaria sulcata Engelm.;
heterotypic synonyms:
Coryphantha calcarata Lemaire; Coryphantha roederiana Boed.; Coryphantha speciosa Boed.; Mammillaria calcarata Engelm.;

protologue: Cact. 4: 48 (1923)
URL protologue: https://archive.org/stream/mobot31753002274337#page/48/mode/2up

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