Cactus / agavoides

This grafted Ariocarpus agavoides is quite old.
I bought seeds and sowed on 29/07/2003.
Several young seedlings were grafted onto Hylocereus grafting stocks.
Although Hylocereus is considered as a non-permanent stock, the stock has still kept a healthy condition.
Since this plant has many flowers every year, I keep it for the seeds collection.