Search By Location 
 

Rye Grass (Lolium)

section divider
Home « Pennsylvania « Cumberland « Lolium

Rye Grass Genus Details

section divider
The rye grass genus has short-lived perennial, biennial, and single-stemmed annual species. This grass is widely used in lawns, pastures as a forage, roadsides and waste areas. Perennial types grow in tufts or mats. Flat or slightly rolled (inward) leaf blades have a smooth surface and grow 1-10 inches long. Flowers are located on stalks 2-6 inches tall. Flowering occurs in June-August. The majority of the pollen comes from the grass found in patures, hay fields and wild areas, since the plants must usually be more than 1 foot tall to flower.

Rye Grass Allergy Info

section divider
This is one of the more significant grass types in terms of allergy. Abundant pollen shed can cause severe pollinosis problems in all regions of the U.S.

Rye Grass Pollen Description

section divider
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

section divider
Allergenicity Legend:
Mild Allergen Mild Allergen  |  Moderate Allergen Moderate Allergen  |  Severe Allergen Severe Allergen  |  Allergy Test Allergy Test Available
Rye Grass (Lolium) is a genus of the POACEAE family.
This genus includes the following allergenic species:

Allergens and Plants Search

section divider Enter a full or partial species name to find more information on one of over 1200 potentially allergenic plants. For example, you can find chenopods searching on "cheno" (no quotes) as Latin Name.

Search By Plant Name:
 
 Common Name    Latin Name

Search By Alphabet:
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Advertisement

Rye Grass Genus Location

section divider
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

Related Links

section divider
Advertisement
facebook_twitter

Advertisement