Tephrocactus geometricus f. variegated

T. geometricus in its variegated form has yellowish shades due to the lack of chlorophyll in the epidermis. These variegated specimens will never be identical; even if of the same species, each of them will be one of a kind. The stem is globose, with numerous rhomboidal tubercles. The epidermis is greyish-green and with the addition of variegation immediately catches the eye.