Epithelantha

Epithelantha ilariae

Epithelantha bokei

Epithelantha greggii

Epithelantha pachyrhiza

Epithelantha spinosior

Epithelantha greggii subsp. potosina

Epithelantha cryptica

Epithelantha pachyrhiza subsp. pulchra

Epithelantha pulchra

Epithelantha micromeris

Button cactus

Epithelantha polycephala

Epithelantha potosina