It looks like a superb martagon, but perhaps it's not all about the spots as the color of the stigma at least to my eyes doesn't seem to match most other images of 'Claude Shride', either online or indeed as seen in my own garden:
'
I did however find one photo of 'Claude Shride' that looks a little more like the martagon in your image:
https://www.blomsbulbs.com/lil...
It's a UK vendor.
