Mammillaria heyderi Muehlenpf. [ Mammillaria heyderi var. hemisphaerica Engelm.]
Engelmann, G., Plates to the Cactaceae of the Mexican boundary (1857-1859)
Rep. U.S. Mex. Bound.

t. 9

Mammillaria heyderi Muehlenpf.

name cited:
Mammillaria heyderi var. hemisphaerica Engelm.
name recognized:
Mammillaria heyderi Muehlenpf.
drawing: P. Roetter
family: Cactaceae
subfamily: Cactoideae
tribe: Cacteae
epithet: heyderi

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homotypic synonyms:
Neomammillaria heyderi (Muehlenpf.) Britton & Rose;
no full size  illustration available (3a)