Plant Allergy Overview
Bent grass is a high pollen producer. This is one of the more significant grass types in terms of allergy.
Creeping bent grass is erect and grows from creeping perennial rhizomes with open reddish panicles. This grass is generally used for a pasture grass but some species are used for lawns and golfcourses. Agrostis sheds large amounts of pollen in June-August. In lawns and golfcoursesit is generally mowed and kept at a height of 1/2 inch. In pastures this grass can grow to a height of 2 to 4 feet tall.
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.
The shaded areas on the map indicates where the genus has been observed in the United States.
Species in Plantain Genus
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