This is a 3 years old Ariocarpus retusus v furfuraceus cv Suguri-cauliflower.
A short, 15 mm length of Pereskiopsis is remained and buried into pottingmix.
The plant relies upon roots come out from the Pereskiopsis at moment.
Since the Pereskiopsis is not a permanent stock, it will die within 2 years.
Roots will come out from the scion when the stock died.
I experienced good results of this rooting method with kotschoubeyanus.
I set 24 of cauliflowers and they are under trial.