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Beech (Fagus)

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Beech Genus Details

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Beech trees are tall, deciduous trees that reach 60 to 75 feet in height. Beech trees have veined elliptical leaves with teeth-like edges. These trees contain both male and female flowering parts, meaning they produce pollen, and can be pollinated either by themselves, or by other plants. American beech is the only native species of the genus in the U.S. The European beech is widely planted in the U.S. The edible nuts are found together in 2's or 3's, covered by a husk. The leaves and bark are poisonous. Flowering occurs during March to May depending on the latitude and elevation. The buoyant pollen is easily dispersed by wind.
European Beech (Fagus sylvatica), Lewis et al
European Beech (Fagus sylvatica), Lewis et al
American beech (Fagus grandifolia)
American beech (Fagus grandifolia)

Beech Allergy Info

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Beech trees are related to oaks, and as such, have allergenic pollen. Usually beech is not considered as allergenic. The European beech sheds much more pollen than the American species, but both have been reported to have minor allergenic importance.

Beech Pollen Description

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Pollen grains in this family are prolate subspheroidal or suboblate; the amb rounded, triangular, or trilobed and 3-colporate, 3-colporoidate, or 3-colpate. The colpi are long and narrow and the ora have thickened margins. The sexine is tectate and the intine is thin. Pollen grains of Fagus are distinct due to their large size.
They vary from 31-52 x 32-54 micrometers.

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
Beech (Fagus) is a genus of the FAGACEAE family.
This genus includes the following allergenic species:

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Beech 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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