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Winged-Pigweed (Cycloloma)

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Winged-Pigweed Genus Details

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Winged pigweed is in the lambsquarter (Chenopodiaceae) family. Originally from Europe, it has spread all over the U.S. Generally, winged pigweed is found in pastures, fields and road sides. Leaves are generally rough feeling, and the plant has an erect habit. The flowers of the plant are collected in small, long, flowering clusters. Pollen is wind borne and is shed abundantly in the summer months.

Winged-Pigweed Allergy Info

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Pollen in this family is usually considered a significant cause of pollinosis, but varies among genera within the family. It is thought that there is considerable cross reactivity among the genera. Winged pigweed has not been studied extensively in this regard.

Winged-Pigweed Pollen Description

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The pollen grains of these families are spheroidal and pantoporate; the pores 20-65 per grain, usually circular, either globally distributed or in luminoid areas separated by muroid ridges; and the opercular granular. The sexine is often tegillate, undulating with a granular surface that is spinulose. The nexine is as thick as or often thinner than the sexine and the intine is generally thick or indistinct.
The pollen grains are 14-50 micrometers in diameter.
This plant is a member of the Chenopodiaceae pollen type group.  This chenopod pollen grain photo represents all members of this group.
This plant is a member of the Chenopodiaceae pollen type group. This chenopod pollen grain photo represents all members of this group.
This plant is a member of the Chenopodiaceae pollen type group.  This chenopod pollen grain photo represents all members of this group.
This plant is a member of the Chenopodiaceae pollen type group. This chenopod pollen grain photo represents all members of this group.

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
Winged-Pigweed (Cycloloma) is a genus of the CHENOPODIACEAE family.
This genus includes the following allergenic species:

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Winged-Pigweed 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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