Pot: 6,5 cm.
In nature it's a rare plant, thus is highly appreciated by green collectors. It has a columnar habit which, over time, tends to cluster at the base. Its stem is of a bright green color, with well-defined ribs, furrowed inbetween, with gray margins that seem lignified, from which small rigid greyish thorns emerge. Flowering occurs along the stems, blooming with small yellow-amber flowers.