Generally small, colorful cacti, globular in form, which freely produce flowers that are relatively large in relation to the body. They have no distinctive ribs, but do have regularly arranged small tubercles. Relatively easy to grow.
Orange flowers, softish spines
Pale pink flowers, occasionally white flowers
Clumping form with dark green body, short white spines and red / orange flowers (selected randomly)
Orange flowers, soft white spines
Short spined, clumping, dark red flowers
violet flowers, darker body