Gymnocalycium species ?- BBC Show in MNP, Mumbai
Cactus For ID : MNP,Mumbai : 020513 : AK-5 : Attachments (1).  3 posts by 2 authors.
Again a small potted Cactus at the BBC Show in MNP, Mumbai on 31/3/13.
Cultivated plant.
This one is tough ..., It looks like a Gymnocalycium to me, but species? I’m not sure, a bloom would be definitive.