Mammillaria centricirrha

The name Mammillaria comes from the Latin for "nipple", because the
areolas (structures carrying the spines) are carried by nipple like
structures, instead of being organised in ribs like many other cacti. It
mainly populates Central America and Mexico. It needs good drainage and light
shade in order to survive, to prevent water loss once it is in the plant
itself it has a thick waxy cuticle and no leaves. It can survive at a minimum
temperature of around 10°C