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Olive (Olea)

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Olive Genus Details

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The leaves of olive trees are opposite and usually evergreen in the southern parts of the United States. The tree is small (up to 25 feet) and spreading. The flowers appear in the spring and are white, small and fragrant.
Olive (Olea Europaea)
Olive (Olea Europaea)
Blooming Olive
Blooming Olive

Olive Allergy Info

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Where the tree is present, reactions to olive pollen are common, and typically severe.

Olive Pollen Description

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Pollen grains are prolate, suboblate to spheroidal and 3-colpate. The surface is reticulate and the exine is thick.
Pollen grains vary in size from 22-28 micrometers.
olea europaea, single grain. Herb. MIN
olea europaea, single grain. Herb. MIN
Olea europaea, multiple grains. Herb. MIN
Olea europaea, multiple grains. Herb. MIN

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
Olive (Olea) is a genus of the OLEACEAE family.
This genus includes the following allergenic species:

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Olive 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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