Boneset, Joe-Pye-Weed, Thoroughwort (Eupatorium)
Boneset, Joe-Pye-Weed, Thoroughwort Genus Details
Eupatorium is generally found in overgrazed pastures and waste places. They are perennial herbs growing 3-5 feet tall having stout, hairy stems and opposite leaves with a broad wrinkled base which surrounds the stem. The flower heads are in loose terminal clusters and are white to purple depending on the species. The genus is named in honor of the Greek physician, Eupator Mithridates, who used this genus as a medicinal plant. Leaves and flower tops have been used as a gentle laxative. Some of these plants such as Joe-Pye-Weed, are found in gardens.
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White snakeroot (Eupatorium rugosum).
Boneset, Joe-Pye-Weed, Thoroughwort Allergy Info
Moderate allergencity generally in summer months when it is in bloom.
Boneset, Joe-Pye-Weed, Thoroughwort Pollen Description
Baccharis pollen grains are oblate-spheroidal to prolate-spheroidal; the amb triangular, 3-4 lobate and 3-4 colporate. The sexine is generally thick, tectate, and has long spines. The intine is thin but slightly thickened below the apertures.
The grains are typically 20-30 micrometers in diameter.
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Baccharis halimifolia, single grain. Herb. MIN. Eupatorium has pollen grains of the baccharis-type.
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Baccharis halimifolia, multiple grains. Herb. MIN. Eupatorium has pollen grains of the baccharis-type.
Species in This Genus
Allergenicity Legend:
Mild Allergen |
Moderate Allergen |
Severe Allergen |
Allergy Test Available
Mild Allergen |
Moderate Allergen |
Severe Allergen |
Allergy Test Available
Boneset, Joe-Pye-Weed, Thoroughwort (Eupatorium) is a genus of the ASTERACEAE family.
This genus includes the following allergenic species:
This genus includes the following allergenic species:
