Nice to see how it divides, I've never got any of my rhodantha's to that stage. It must be a reasonably old plant.
I've never seen any DH plants in seed lists, and wonder if indeed he did distribute seed. I suspect he didn't and that his specimens were obtained for botanical analysis rather than propagation - which is a great shame if true.
Maybe now's the chance to do so, as if all the plant syou;ve obtained are of this scale, they should produce seed!