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Sweet-Gum (Liquidambar)

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Home « Louisiana « Grant « Liquidambar

Sweet-Gum Genus Details

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A native ornamental tree of the eastern U.S., Sweet-gum is valued for its foliage and scarlet autumn leaf color. The cone-shaped, aromatic deciduous tree will grow over 100 feet tall. The dark green leaves are star-shaped with 5-7 lobes and are about 4-7 inches across. Inconspicuous upright staminate (male) and pendulous pistillate (female) flowers are in separate, round greenish clusters on the same tree. Flowers appear in April and May as leaves emerge and are wind pollinated. A large number of round, prickly seed capsules are produced in late summer.


Sweet-Gum Allergy Info

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Sweet-gum is considered to be mildly allergenic and found primarily in eastern U.S.

Sweet-Gum Pollen Description

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Pollen grains of sweetgum are easy to identify by their spheroidal shape and pantoporate apertures with up to 20 large circular pores. The surface patterns of the grains are reticulate.
Pollen grains vary in size from 34-43 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
Sweet-Gum (Liquidambar) is a genus of the HAMAMELIDACEAE family.
This genus includes the following allergenic species:

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Sweet-Gum 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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