Can Lysichiton and Lewisia both be found in America?
Lewisia Lewisia is a plant genus, named for Meriwether Lewis who encountered the species in 1806. The native habitat of "Lewisia" species is north facing cliffs in the western part of North America. Local Native Americans ate the roots, which have also been used to treat sore throats.
Phyllothallia Phyllothallia is a small genus of liverworts of the Southern Hemisphere. It is classified in order Metzgeriales and is the only member of the family Phyllothalliaceae within that order. Unlike most members of the Metzgeriales, "Phyllothallia" has a leafy appearance. The genus has a disjunct distribution, with the species "Phyllothallia nivicola" found in New Zealand while the other species in the genus, "Phyllothallia fuegiana", occurs in Tierra del Fuego.