Rye (Secale)
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Rye Genus Details
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This grass is a cool-season grain or cereal crop that is not to be confused with ryegrass, a common allergenic lawn grass. This grain, which is grown worldwide, is not a major crop in North America. This genus has 5 species, which consist of both annuals and perennials. The plants grow up to 5' tall and has simple stems and bluish-green, flat leaves that reach 1/2' wide. Flowering occurs from May to June. The abundant pollen is heavy which restricts its wind dispersal range. The grain is used to make bread and rye whiskey.
Rye 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.
Rye 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](library_images/pollen/poaceae_pollen_genus1_66.jpg)
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](library_images/pollen/poaceae_pollen_genus2_66.jpg)
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 |
Moderate Allergen |
Severe Allergen |
Allergy Test Available
![Mild Allergen](library_images/icon_mild.gif)
![Moderate Allergen](library_images/icon_mod.gif)
![Severe Allergen](library_images/icon_sev.gif)
![Allergy Test](library_images/icon_t.gif)
Rye (Secale) is a genus of the POACEAE family.
This genus includes the following allergenic species:
This genus includes the following allergenic species: