Hi y'all! Hope you're feeling as good as those gymnocalyciums! They've been taken some months ago from a big box store - full of mites and unbelievably pumped with water. Now they are slowly coming back to as they should be. Unfortunately I'm not an expert on them, so I have them unidentified - though any help with that is much appreciated.
Generally gymnocalycium come from south America and are a very small spieces of cacti, living in wide range of weather conditions.