I took a photo of this at the Chelsea Flower Show in London. It is
Cypripedium kentuckiense, just thought you may be interested.
We have a wild one that is very rare and that is
Cypripedium calceolus. It was rarely if ever seen in the UK as it was decimated by the Victorian plant hunters and orchid collectors. It was thought to be extinct in the wild until one was found and is closely guarded. The Royal Botanic Gardens at Kew, and indeed others have some.
Regards from England.
Neil.