You can see the new growth to the left, this is less than six months of growth. It took a couple of years to throw the pup though.
Spines and flowers forming.
With apologies to the late Professor C. D. Darlington the following misquotation springs to
mind ‘cactus taxonomy is the pursuit of the impossible by the incompetent’ - Fearn & Pearcy, Rebutia (1981)