Pot: 6,5 cm.
It is a small succulent shrub, which over time tends to lignify at the base. Its sturdy cylindrical stems tend to assume a columnar shape. The intense green stems are well defined by longitudinal ribs with areas of yellow epidermis due to the lack of chlorophyll in those specific points: this makes each specimen unique, never identical to another! Numerous and dense greyish thorns protrude along the stems, extremely pointed and robust, a characteristic that has earned this plant the name “ferocious”.