I found this Dicentra all alone and without a tag amongst Dicentra 'Stuart Boothman' in a nursery. The nurseryman didn't know its name nor was it listed in their catalog. The leaves look similar to the ones of D.Stuart Bootman, maybe a bit less finely divided. The shape of the flowers is the same but the colour is very different though. My first thought was maybe Dicentra 'Ivory Hearts' but somehow it doesn't really fit and Ivory hearts has entirely white flowers..
For comparison the Dicentra 'Stuart Bootman' I also purchased..