Twelve images of Oregon Grape, Mahonia aquifolium or Berberis aquifolium a member of the barberry family, Berberidaceae, variously separated into the narrowly defined genus Mahonia or the broader taxonomic concept of the genus Berberis. It occurs in Western North America, from California to British Columbia. It's the state flower of Oregon. Mahonia bark and root is high in the bioactive alkaloid berberine. Used by native groups for stomach problems, bleeding, tonic, eyewash, to purify the blood, etc. It has sometimes been suggested as a useful substitute for other berberine-rich plants such as goldenseal Hydrastis canadensis. The plant is widely cultivated as an ornmental broadleaf evergreen.