Stetsonia is a genus of cactus, with the sole species Stetsonia coryne, the toothpick cactus. The plant is native to the deserts and dry forest of Argentina, Bolivia and Paraguay. Stetsonia coryne grows to a height of 15 to 25 ft tall.
Stetsonia coryne, the only species of the genus Stetsonia, is a large, massive, tree-like columnar cactus that grows to a height of 3-10 m tall and is one of the most striking features of hot desert regions in Argentina. In outline, the plants resemble somewhat the many-branched Polaskia chichipe and Polaskia chende of Mexico's Valle de Tehuacan, branching quickly and prolifically from a short trunk to present an overall appearance of an inverted triangle set on a post. It is among the most famous cacti for the fiercely spines that cover the trunk and should prove an interesting and eye-catching plant for the specialist collector and for those wanting a somewhat different plant.