Sclerocactus wetlandicus 'ilseae' / 'brevispinus'  is a most beautiful cactus but rarely seen in cultivation. It looks sort of like Sclerocactus mesae-verdae, informally Sclerocactus uintahensis. It is quite difficult to grow on its own roots, hence for ease of cultivation it is grafted on a very cold resistant Echinocereus. Frost hardy down to -12° (or less).