Cascade Barberry Plant Information
Cascade Barberry grows in the following 5 states:Idaho, South Carolina, Oregon, California, Washington
The plant was collected by Lewis and Clark during their famous expedition to the West before being described for science in 1813.Some authors place the entire genus Mahonia within the genus Berberis.Mahonia nervosa, commonly known as dwarf Oregon-grape, Cascade barberry, Cascade Oregon-grape, or dull Oregon-grape, is a flowering plant native to the northwest coast of North America from southern British Columbia south to central California, with an isolated population inland in northern Idaho. It is especially common in second growth, Douglas-fir or western redcedar forests, making use of those pools of sunlight that intermittently reach the ground.
It is an evergreen shrub with short vertical stems, mostly under 30cm (12in), while the leaves reach higher, rarely up to 2m (6ft 7in) tall. The leaves are compound, with 9-19 leaflets; each leaflet is strongly toothed, reminiscent of holly, and somewhat shiny, but less so than tall Oregon-grape. The leaflets do not have a single central vein as in that species, but several veins arranged fan-like, branched from the leaflet base, hence the epithet nervosa. The flowers and fruit are like those of other Oregon-grapes, and are equally bitter-tasting.
Some Plateau Indian tribes drank an infusion of the root to treat rheumatism.
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