Mammillaria heyderi subsp. heyderi Mammillaria heyderi subsp. hemisphaerica Mammillaria heyderi subsp. meiacantha Mammillaria heyderi subsp. gaumeri Mammillaria heyderi subsp. gummifera Mammillaria heyderi subsp. macdougalii
Mammillaria parrasensis Mammillaria lindheimeri Mammillaria buchheimiana Cactus hemisphaericus Cactus heyderi Neomammillaria heyderi Mammillaria heyderi var. heyderi Mammillaria waltheri Mammillaria heyderi var. bullingtoniana Mammillaria sororia Mammillaria texensis Mammillaria hemisphaerica var. albispina Mammillaria hemisphaerica var. nigrispina Mammillaria hemisphaerica var. waltheri Mammillaria heyderi f. hemisphaerica Mammillaria heyderi var. waltheri Cactus sororius Cactus texensis
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024