Mammillaria clava
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Mammillaria clava Pfeiff. [Synonym] = Coryphantha octacantha (DC.) Britton & Rose (Cactaceae)
Engish:
clavus,-a,-um
homotypic synonyms:
Coryphantha clava (Pfeiff.) Lemaire; Echinocactus clavus (Pfeiff.) Poselger;
protologue: Allg. Gartenzeitung 8: 282 (1840)