Tall Oat Grass (Arrhenatherum)
Tall Oat Grass Genus Details
Tall oat grass was introduced from Europe as meadow grass. It's a non-native, creeping perennial grass that can grow up to 6 feet tall. Leaf blades are flat and rough. The panicle (flowering structure) is one half to one foot long. This plant also has short whorled branches with spikelets.
Tall Oat Grass Allergy Info
Although the grass family in general is considered significant allergenically, this genus is not typically considered to be problematic. It sheds little pollen.
Tall Oat Grass Pollen Description
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.
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This plant belongs to the grass family. All pollen grains in this family are similar to the Poaceae (grass) grain pictured here. Herb. MIN
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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
Allergenicity Legend:
Mild Allergen |
Moderate Allergen |
Severe Allergen |
Allergy Test Available
Mild Allergen |
Moderate Allergen |
Severe Allergen |
Allergy Test Available
Tall Oat Grass (Arrhenatherum) is a genus of the POACEAE family.
This genus includes the following allergenic species:
This genus includes the following allergenic species:
