Uebelmannia pectinifera

Uebelmannia pectinifera is a rare cactus known for its ribbed, spherical to cylindrical shape and purplish-brown to green colour. Its sharp ribs have fine, comb-like spines in a radial pattern, giving it a textured look. Mature plants may develop a waxy coating for sun protection and can produce small yellow flowers at the top. 

This cactus thrives in sunny environments like greenhouses or conservatories.

How to care for your cactus -

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

Light: Prefers bright but indirect light conditions.

Humidity: Will thrive in average humidity levels but prefers lower 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? Yes and best to keep away from pets due to their small painful spikes.