(Tephrocactus bonnieae)
Maihueniopsis is a genus of the cactus family (Cactaceae), containing 18 species. The former genus Puna R.Kiesling is now synonym to Maihueniopsis. Tephrocactus bonnieae is a species of plant in the family Cactaceae. It is endemic to Argentina. Its natural habitat is hot deserts. It is threatened by habitat loss.