Very stout spines with a hooded central spine. Should be raised as house plant except in the Southwest. The perfect cacti for windowsills and limited spaces. They are small and compact. They will bloom at an early age and bloom often.
Flowers are white and pink, sometimes red.
A heavy, columnar plant that eventually branches from the base. Has a deep red top knob and deep red to jet black spines on the side. A small, free blooming cacti that is easy to raise and to take care of. One of the best blooming cacti. Another excellent choice for beginners.