![](https://d1f039r1w7qp6p.cloudfront.net/images/library/hero/Cynosurus_echinatus_(6134698364).jpg)
Plant Allergy Overview
Allergenicity
Moderate
Pollen Season
Summer
Type
Grass
Sub-Type
Perennial
Allergy Information
This grass genus can become a problem where it is found in volume.
Genus Details
Dog's tail grass is generally found in waste areas and pastures. Sheep are the main forage animals that consume this grass. Dog's tail is a perennial which grows on underground upright stems (rhizomes). Leaves are in two rows on the stem. Dog's tail grass produces abundant pollen in June and July. In southwestern states it can produce pollen April through July. Dog's tail grass gets its name from its wiry stalks, which, when dried, bend to look like a dog's tail waving in the wind.
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.
Genus Distribution
![](/Content/library/maps/Cynosurus.png)
The shaded areas on the map indicates where the genus has been observed in the United States.
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Species in Dog's-Tail Grass Genus
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