Flora
I would not be positive that it is reniforme, stamens on yours seems to be more pronounced although it is distinction of the plant from diffusiflorum. It is certainly very very beautiful and I do not know what I could offer you for few seeds of it. Thalictrums are my pleasure to grow and they do well for me.
To confirm your ID you can check with Rob from Rob's plants who is growing reniforme or you could check with Crug's farm who has one of the best collection of thalictrums.

Lindalana,
Thanks for the reply.....I have actually looked at Crug's and will email Rob.
As far as seeds go, I wish I could get seeds to get more plants but they are always empty and worthless. It hasn't given me any babies either.
Closeup of flowers just starting to open.
Thalictrum ?????
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Thalictrum rochebrunianum
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Anybody seen this?
Thanks

I think my mystery thalictrum may be delavayi var. decorum. Wish I could figure out how to get babies!!
flora