Thanks for the book reference. I have two copies of republications of peony books that are supposed to be the first definitive books for peony growers published. Really informative plus there are many references that sort of highlight the time it was written in (late 1800's). I will have to look up your references though I have several contemporary books even some with pictures from our own great Verna Pratt who is one of the founders and maintainers of the botanical garden's (Alaska) rock garden. The local rock garden society is offering a 'field' trip to Point Barrow, Alaska in July for seed collection and investigation. Can hardly wait.
