Name: greene Savannah, GA (Sunset 28) (Zone 8b) I have no use for internet bullies!
I instantly thought of the Ladyslipper also.
My favorite places to camp are those built by the The US Army Corps of Engineers; Cypripedium fasciculatum is listed as a plant at one of their other projects in Idaho. http://www.nww.usace.army.mil/...
But your's looks more 'stripey'; maybe Cypripedium calceolus?
Edit to add a back-up guess: Veratrum viride
Sunset Zone 28, AHS Heat Zone 9, USDA zone 8b~"Leaf of Faith"