... i dont know where this is going, but from an earlier discussion..
The root, caudex or not, still need a lot of fine fibers to be healthy, which i do not see....
Euphorbias are horrible with roots....nearly all of mine were planted at the wrong height, had a really tiny rootball...
And finally, euphorbias are horrible with rooting...Dont know how wide this applies, but we've encountered some pretty bad success rates....
I do know what raised roots are, i own an adenium with that feature as well...
However, when i repotted mine, it had those fine roots that ive talked about.....
Might be that e.stellata in particular doesnt possess such fine roots, but until someone confirms this, assume that the plant doesnt have an undamaged rootball....