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Rush (Juncus)

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Rush Genus Details

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Rush is a tufted grass-like plant which favors bogs and marshes. The stems on some varieties are twisted with small brown-green flowers on the tips of the stems. Rush grows to 4 feet tall. It is native to North America, Europe, and Asia.

Rush Allergy Info

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Generally low in allergenicity as it grows in low populated areas.

Rush Pollen Description

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Pollen grains of Juncus are inaperturate and speroidal to ovoid, with a thin reticulated exine and an extremely thin intine.
The grains are between 22-34 micrometers in diameter.

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
Rush (Juncus) is a genus of the JUNCACEAE family.
This genus includes the following allergenic species:

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Rush 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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