Hornbeam (Carpinus)
Hornbeam Genus Details
Hornbeams are small trees with leaves that resemble birch leaves. The blue beech, or American hornbeam is the only hornbeam species native to the U.S., and grows 15-25 feet tall. Blue beech are common in moist woods and along streams in the eastern U.S. Plants are both male and female, meaning they can pollinate themselves or be pollinated by other plants. The fruit is a one-seeded nut. Flowering occurs in April-May before the leaves emerge and usually precedes birch in flowering.
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American Hornbeam (Carpinus caroliniana).
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American Hornbeam (Carpinus caroliniana).
Hornbeam Allergy Info
Hornbeams are wind-pollinated and produce abundant pollen. This pollen has been reported to cross-react with birch and alder pollen. Birch is considered particularly allergenic.
Hornbeam Pollen Description
Pollen grains are isopolar, suboblate to oblate or oblate-spheroidal and usually have 3-4 pores. The pores are small and usually circular. The exine is smooth but can be granular around the pores.
Pollen grains vary in size from 26-31 x 28-35 micrometers.
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Carpinus caroliniana, single grain. Herb. MIN
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Carpinus caroliniana, multiple grains. Herb. MIN
Species in This Genus
Allergenicity Legend:
Mild Allergen |
Moderate Allergen |
Severe Allergen |
Allergy Test Available
Mild Allergen |
Moderate Allergen |
Severe Allergen |
Allergy Test Available
Hornbeam (Carpinus) is a genus of the BETULACEAE family.
This genus includes the following allergenic species:
This genus includes the following allergenic species:
