Dear James, As far as I know Cryptostephanus densiflorus is not in Cultivation, yet. But on it's distribution I can add that they have also been recorded from extreme northern Namibia, so perhaps there is still hope of it being introduced into cultivation! I am happy to report that my plants of C. haemanthoides purchased from Rare Exotics are doing well and all have produced new leaves and roots. Let's hope I can get them to flower. Happy growing! Pieter van der Walt South Africa