Neomammillaria fasciculata Cactus fasciculatus Chilita fasciculata Mammillaria fasciculata Echinocereus fasciculatus subsp. fasciculatus Ebnerella fasciculata Echinocereus abbeae Echinocereus boyce-thompsonii Echinocereus fasciculatus Echinocereus fasciculatus var. boyce-thompsonii Echinocereus fasciculatus subsp. boyce-thompsonii Echinocereus fendleri var. boyce-thompsonii Echinocereus fendleri var. fasciculatus Echinocereus fendleri var. robustus Echinocereus rectispinus var. robustus Echinocereus robustus Mammillaria fasciculata
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024