I don't have it, but it looks like pics of Roswitha I remember.
AHS db doesn't mention prolifs. And I have some DLs that are not registered as rebloomers but they rebloom.
No idea if prolifs or rebloom could be side effects of tissue culture, I mostly hear of worse performance or not looking quite like the original.

ETA: I just did a quick google search and found at least 2 links mentioning Roswitha and proliferation

This post was edited by nat4b on Tue, Aug 5, 14 at 23:47

Thank you for responding

I hesitated to respond because I'm not so sure about my Roswitha. I looked for a photo, but I guess I deleted the only photo I had of it. I've had mine for, maybe,10 years. Started out several fans, but immediately shrank to 1 fan & has remained that. Few blooms each year, although they are always lovely, but during that entire time, only 1 bloom was double. No prolifs. I can't remember where I got it, maybe a trade, but I suspect mine is not Roswitha, or maybe it is tissue culture or seedling. I've always heard that tissue cultured plants perform worse also. I would certainly be delighted if mine did as well as yours.

ngraham...

When I got mine this year I specifically got the pot that had enough fans so that I could divide it for either side of the walkway to the front door.

Those same 3 fan divisions have doubled the # of fans, the first flush of blooms have the proliferation, but the rebloom scapes are showing no signs of proliferations.

I'll see what happens next year, since they'll be settled in, but I may have to move and divide them again next year, if they continue to increase at this rate...