Various Subspecies of Mammillaria heyderi
All Resolutions
1-3 Mammillaria meiacantha — 4-14 M. heyderi var. applanata
15-17 Var. hemisphaerica — 18-20 M. gummifera.
Description:
Steel-engraved botanical plate illustrating three cataloged subspecies of Mammillaria heyderi: gummifera, hemisphaerica, and meiacantha. Contemporary taxonomy now classifies hemisphaerica and the variant applanata as synonyms. The species belongs to the family Cactaceae and is indigenous to Mexico and the United States.
