Very little has been published until now on the ethnobotany of western Oregon indigenous peoples. Ethnobotany of the Coos, Lower Umpqua, and Siuslaw Indians documents the use of plants by these closely-related coastal tribes, covering a geographical area that extends roughly from Cape Perpetua on the central coast, south to the Coquille River, and from the Coast Range west to the Pacific shore, with a focus on native plants and their traditional uses.