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Rice (Oryza)

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Home « Louisiana « St tammany « Oryza

Rice Genus Details

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Rice is an important grain crop. It was originally native to the East Indies, but is now grown throughout the tropics, California and Texas. The leaves are 2' long and 1/2" wide. The plant bears fruiting panicles that are a foot long. The grain is straw-colored but white when polished.

Rice Allergy Info

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Allergenicity has been reported where rice is grown commercially.

Rice 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. Pocaceae 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

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Allergenicity Legend:
Mild Allergen Mild Allergen  |  Moderate Allergen Moderate Allergen  |  Severe Allergen Severe Allergen  |  Allergy Test Allergy Test Available
Rice (Oryza) is a genus of the POACEAE family.
This genus includes the following allergenic species:

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Rice Genus Location

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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

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