Escobaria vivipara var. vivipara - Common Ball Cactus

Scientific name: Escobaria vivipara var. vivipara

Synonyms: Coryphantha vivipara, Mammillaria vivipara, Mammillaria vivipara var. borealis

Common names: purple ball cactus, pink ball cactus, pink pincushion cactus, purple pincushion, spinystar, spinystar cactus, common ball cactus