|Buiningii is a species of Uebelmannia cactus. It is spherical and sometimes elongated with greenish red-brown to deep chocolate bodies covered with very small waxy scales. This cactus prefers moist, humid conditions and when grown as a houseplant, loves to be misted daily during the summer. At the onset of winter, do not water, but mist only when days are warm or if your home dries out easily. Uebelmannia has a rounded, spherical form, often with vertical ridges. Aereoles are set closely and bear 6 to 8 slightly curved spines. Summer flowers are bright yellow and funnel-shaped.