Re: Lysichitum camtschatcense
My 1916 issue of Bailey says the range is E. Siberia, Japan, Alaska,
Oregon. It does grow on the unpopulated outer coast of Vancouver
Island, and is definitely not introduced there.
The March 1994 issue of The Garden has a cover picture of a hybrid of L.
camtschatcense and L. americanum, almost white, and a few words about it
growing in a Cornish garden.