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Hackberry (Celtis)

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Hackberry Genus Details

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Hackberries are grown as shade and boulevard trees and shrubs in metro and rural areas. Trees can reach heights of 60 to 80 feet. Celtis has deciduous leaves that are alternate and simple. The fruit is a drupe, which contains a large seed and a thin, dryish, but sugary flesh (comparable to dates). The leaves of hackberry are similar to those of elms, but they are more pointed than elm leaves, and they are singly toothed along the edges.
Hackberry (Celtis occidentalis)
Hackberry (Celtis occidentalis)
Hackberry (Celtis occidentalis)
Hackberry (Celtis occidentalis)

Hackberry Allergy Info

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Not particularly allergenic, hackberry could cause allergic reactions to those sensitized due to close proximity and continued exposure. Even though Celtis is in the same family as elm, a very allergenic genus, Celtis has not been found to be the source of a great deal of pollinosis.

Hackberry Pollen Description

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Grains are suboblate to spheroidal and are 3-10 porate. The sexine is thickened around the pores and granulate.
The pollen grains are typically 25-30 micrometers.
Celtis occidentalis, single grain. Herb. MIN
Celtis occidentalis, single grain. Herb. MIN
Celtis occidentalis, multiple grains. Herb. MIN
Celtis occidentalis, 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
Hackberry (Celtis) is a genus of the ULMACEAE family.
This genus includes the following allergenic species:

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Hackberry 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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