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Wood-Nettle (Laportea)

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Wood-Nettle Genus Details

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Wood nettle is in the same family as the stinging nettle (Urticaceae). It has opposite leaves and 4-sided stems with stinging hairs. It is a weed found in disturbed areas, farmyards, roadsides and pastures. The sharp pointed hairs have a bulbous base filled with irritating fluid. These hairs break when they penetrate the skin, releasing the fluid.

Wood-Nettle Allergy Info

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Little or no pollen allergenicity has been reported. Stinging hairs located on the stem and leaves cause a type of dermatitis.

Wood-Nettle Pollen Description

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Pollen grains are oblate-spheroidal to spheroidal, and are small with a rounded-triangular amb. The grains are 2-4 porate and the pores are circular.
Pollen grains are usually 12-15 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
Wood-Nettle (Laportea) is a genus of the URTICACEAE family.
This genus includes the following allergenic species:

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Wood-Nettle 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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