/wp-content/uploads/2020/10/DSCN0822-3.JPG
 
Cactus for ID : Flower Show,Mumbai : 230213 : AK-2: Another cactus seen at the Flower Show in Mumbai, during Feb, 2011.

A cultivated, potted plant.


That is a Mammillaria cv, monstrose something, can’t remember the species 


Some kind of Mammillaria monstrose nudum, but I have no accurate id.