Sulcorebutia glomeriseta

Sulcorebutia glomeriseta when not in bloom can easily be mistaken for Rebutia, something of fiebrigii or spinosissima clans. The very Weingartia-like flowers show that this is indeed Sulcorebutia, or following the current thinking Weingartia. S. glomeriseta is probably a merely form of S.menesesii, but a very distinct looking plant and well worth it's place in collection.