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Plant Allergy Overview
Allergenicity
Moderate
Pollen Season
Summer Fall
Type
Weed
Sub-Type
Annual
Allergy Information
The pollen of monsterwort is considered allergenic and is a source of pollinosis when it becomes airborne.
Genus Details
Monsterwort is a member of the sunflower family and flowers during July to December in the southwestern U.S. Monsterwort is found primarily in the arid southwest.
Pollen Description
Pollen grains of Parthenice are oblate-spheroidal to prolate-spheroidal; the amb triangular and 3-4 colporate. The sexine is thick, tectate, and is covered with short spines.
Genus Distribution
The shaded areas on the map indicates where the genus has been observed in the United States.
- Native, observed in a county - Introduced, observed in a county - Rarely observedSpecies in Monsterwort Genus
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