Description MonSitePhotos pour l'image Mahonia aquifolicum Pursh
Mahonia aquifolicum Pursh
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Mahonia aquifolium, Oregon grape or holly-leaved berberry, is a species of flowering plant in the family Berberidaceae, native to western North America. It is an evergreen shrub growing 1 m (3 ft) to 3 m (10 ft) tall by 1.5 m (5 ft) wide, with pinnate leaves consisting of spiny leaflets, and dense clusters of yellow flowers in early spring, followed by dark bluish-black berries.
The common name is often, and always in the United Kingdom, left unhyphenated as "Oregon grape", though doing so invites confusion with the true grapes. Some authors avoid this confusion by using "Oregon grape-holly" or "Oregon holly-grape" as a vernacular name for any species of Mahonia. It is also occasionally printed as "Oregongrape".
Mahonia aquifolium is not closely related to either the true holly (Ilex aquifolium) or the true grape (Vitis vinifera cv.).