This checklist is maintained by CPNWH as a working list of scientific names and synonymy for vascular plants, bryophytes, algae, lichens, and fungi. The checklist is used to assign currently accepted taxon names to specimen records in the CPNWH database. It is not intended to be a complete checklist of all taxa that may occur in the region.
The original checklist was created by combining state and provincial checklists from the following sources: Oregon Flora Project, Washington Flora Checklist, USDA Plants, Montana Natural Heritage Program, and the B.C. Ministry of Forests. It is now updated and maintained independently.