Oregon Holly Grape, also known as Oregon Grape or Mahonia aquifolium, is a type of shrub native to the Pacific Northwest region of North America. The plant is characterized by its glossy green leaves with sharp, holly-like thorns and clusters of yellow flowers that bloom in the spring. The fruit of the Oregon Holly Grape is inedible, but the roots and bark have been used for medicinal purposes by Indigenous peoples for thousands of years. Other synonyms for the plant include Holly-leaved Barberry, Mountain Grape, and Shining Oregon Grape. These names all reflect the plant's distinctive appearance and its prevalence in the forests and mountains of Oregon and the Pacific Northwest.