Origin: Introduced
Conservation Status: Not of concern
[none provided]
Occurring in scattered locations on both sides of the Cascades crest; Alaska an Yukon Territory, Rocky Mountain states, and eastern North America.PNW Herbaria: Specimen records of Rheum in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Rheum checklist entry
OregonFlora: Rheum information
E-Flora BC: Rheum atlas page
CalPhotos: Rheum photos