Well, I have a plant from a batch of P mlokosewitschii seed which performs a similar feat each year.
Then the weather intervened in the form of a heavy rain and wind-storm overnight. Wretched timing...
But the weather was not done yet, and overnight another storm or the same one backtracking (which happens in NS more than one would care to imagine) attacked my peonies.
Usually I can expect a flower to last at least a week before it falls apart... Heck, the pollen sacks hadn't even opened yet!
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I presume this plant to be a hybrid due to the fading red tones, but for all I know it might also be a natural variation within the species. Foliage is purely mlokosewitschii in form. The seedlot from which it (and the proper yellow one behind it) was grown was collected from my own plant, open-pollinated in my garden with the possibility of P anomala or P veitchii pollen getting involved.