Mahonia is an evergreen shrub, native to west coast of North America
and also found in other parts normally known as ornamental plant.
Oregon herb is a wonderful medicine for various bodily ailments and has
been used from historical time.
Being a member of berberidaceae it has similar actions as goldenseal and
barberry.
Oregon is small ornamental shrub that grows upto 1-5 m tall. It has
leathery leaves, produces yellow-green colour flowers and purple berries.
The leaves are prickly but the stems lack thorns. The purplish colour
fruit is pretty tart containing numerous seeds.
Oregon is cultivated on the Rocky Mountains upto the height of 7000 ft.
It is abundantly found in Oregon and northern California.
The shrub is drought resistant and thrives in shady areas with well
drained and rich soil conditions.
Roots.
Oregon grape root contains alkaloids like berberine, berbamine and
hydrastine.