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Fluff Grass (Tridens)

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Fluff Grass Genus Details

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Tridens are perennial grasses that have flat to folded leaves with a prominent midrib. The plants range in height from 8" to 4'. Fluff grass occurs infrequently throughout North America. Flowering occurs from late June to late autumn depending on species, latitude and altitude. 3 to 13 flowers are in each spikelet. The flowers and later seeds are covered by 3-toothed hulls or lemmas (tridentate).

Fluff Grass 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.

Fluff Grass 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
Fluff Grass (Tridens) is a genus of the POACEAE family.
This genus includes the following allergenic species:

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Fluff Grass 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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