Stetsonia coryne

This adorable cactus is commonly known as the Argentine Toothpick Cactus. It is a tall, cactus species loved for its striking silhouette and bold spines. Its cylindrical, dark green stems are ribbed with prominent vertical ridges and adorned with clusters of long, needle-like spines that can vary in colour from yellowish to brown or grey.

Over time, it can develop multiple branches, creating a tree-like form. While this cactus is typically cultivated as a smaller plant indoors, it has the potential to grow much larger in its natural habitat. 

How to care for your Stetsonia -

Water: Water sparingly and allow to dry out in between watering

Light: Prefers medium light conditions.

Humidity: Will thrive in average humidity levels

Temperature: Needs average to warm conditions 16-25°C but will be OK down to 10°C for short periods.

Other info - 

Toxic to cats & dogs? No but best to keep away from pets due to their small painful spikes.