Can Lysichiton and Lewisia both be found in America?
Lysichiton: Lysichiton is a genus in the family Araceae. Lewisia: Lewisia is a plant genus, named for Meriwether Lewis who encountered the species in 1806. Lewisia:  The native habitat of "Lewisia" species is north facing cliffs in the western part of North America.
i don't know