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Bottle-Brush Grass, Wild Rye (Elymus)

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Bottle-Brush Grass, Wild Rye Genus Details

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Wild rye is an herb with rounded stems. The leaves are alternate in two rows and are simple. Flowers are small, irregular and have spikelets arranged in long flower clusters called panicles. Wild rye is commonly found in fields, pastures and along road sides. Wild rye flowers in summer through early autumn. It sheds abundant pollen which is wind dispersed.

Bottle-Brush Grass, Wild Rye Allergy Info

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Although the grass family in general is considered significant allergenically, this genus is not typically considered to be problematic.

Bottle-Brush Grass, Wild Rye Pollen Description

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Grains are spheroidal to ovoidal, sometimes elliptical. The exine is thin and the surface is granular to finely reticuloid. Poaceae apertures are 1-porate, with the pores usually circular to ovoidal.
Grains are 22-122 micrometers in diameter.
This plant belongs to the grass family.  All pollen grains in this family are similar to the Poaceae (grass) grain pictured here. Herb. MIN
This plant belongs to the grass family. All pollen grains in this family are similar to the Poaceae (grass) grain pictured here. Herb. MIN
This plant belongs to the grass family.  All pollen grains in this family are similar to the Poaceae (grass) grains pictured here. Herb. MIN
This plant belongs to the grass family. All pollen grains in this family are similar to the Poaceae (grass) grains pictured here. 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
Bottle-Brush Grass, Wild Rye (Elymus) is a genus of the POACEAE family.
This genus includes the following allergenic species:

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Bottle-Brush Grass, Wild Rye 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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