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Oregon-Grape (Mahonia)

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Home « Michigan « Alger « Mahonia

Oregon-Grape Genus Details

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Mahonias are evergreens that are native to North America and Asia. Their height ranges from 3-10' tall and they have spiny, alternate, compound leaves. The leaves can be as long as 14" and have 9-15 leaflets. Mahonias have large yellow flower clusters that are fragrant. The fruits are bluish-black and grapelike. They are edible, but tasteless. Mahonia was used as a herbal medicine for treating psoriasis and impure blood-conditions.



Oregon-Grape Allergy Info

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Mahonia is not a heavy pollen producer and few allergies are reported.

Oregon-Grape Pollen Description

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No pollen description is currently available.

Species in This Genus

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Allergenicity Legend:
Mild Allergen Mild Allergen  |  Moderate Allergen Moderate Allergen  |  Severe Allergen Severe Allergen  |  Allergy Test Allergy Test Available
Oregon-Grape (Mahonia) is a genus of the BERBERIDACEAE family.
This genus includes the following allergenic species:

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Oregon-Grape Genus Location

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The shaded areas on the map indicates where the genus has been observed in the United States. Click the map to see a full scale version of these allergy areas.
  - Native, observed in a county
  - Introduced, observed in a county
  - Rarely observed

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