Taxonomic status: Synonym

homotypic synonyms:
Coryphantha radians var. pectinata (Engelm.) Borg; Coryphantha radians var. echinus (Engelm.) Y.Itô; Coryphantha radians var. sulcata (Engelm.) Y.Itô; Mammillaria radians var. echinus (Engelm.) Schumann; Mammillaria radians var. sulcata (Engelm.) Schumann;

protologue: Mem. Tour N. Mexico : 104 (1848)
URL protologue: https://archive.org/stream/mobot31753000562196#page/104/mode/2up

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