Thanks for that insight, Pieter. It seems a number of plants that have yellow or white flower morphs also have foliage that lacks characteristic red tinge or markings. I've seen some euphorbias like this. Someone did mention to me once that white and/or yellow V. capensis has been seen. Maybe it was Ernst van Jaarsveld. Any intrepid collector (like Ernst) would have gathered it if at all possible, maybe it was an inaccessible plant or was lost in cultivation. Something to dream of! Dylan