Cactus / retusus cultivar

I collected seeds from my cacti, Ariocarpus retusus v major cv Daruma Royal and sowed on 12/11/2006. The growing speed of own-root Ariocarpus are very slow but retusus show quite acceptable speed if you gave soft sunlight and a lot of  water in summer.
The photo is 1st flowering of one of them, 13 cm diameter of body size.