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thoroughwort
Scientific Name: Critonia
Family: Asteraceae
Category: Dicot
Growth:
Duration:
Other Names:
Thoroughwort: A Botanical Overview
The name "thoroughwort" is associated with several plants, most notably Eupatorium perfoliatum, but also applied to other species such as Eupatorium serotinum, Eupatorium album, Eupatorium hyssopifolium, and Ageratina havanensis. It's important to note which plant is being discussed when using this common name.
Considerations for Pets
- Some species of thoroughwort, like Eupatorium, are perennial herbs with hairy stems.
Considerations for Children
- Some species of thoroughwort, like Eupatorium, are perennial herbs growing 3-5 feet tall.
Taxonomy and Nomenclature
- Family: Asteraceae (also known as Compositae or Sunflower Family)
- Scientific Names: Several species fall under the name "thoroughwort," including:
- Eupatorium perfoliatum (Boneset, Ague-weed, Indian Sage)
- Eupatorium serotinum (Late-flowering thoroughwort, White boneset, Late boneset, Late-flowering boneset)
- Eupatorium album (White thoroughwort)
- Eupatorium hyssopifolium (Hyssop-leaf thoroughwort)
- Ageratina havanensis (Shrubby boneset, White mistflower, Havana snakeroot)
- Eupatorium adenophorum or Ageratina adenophora (Croftonweed)
- Eupatorium altissimum L. (Tall Thoroughwort, Tall Boneset, Tall Joe-Pye Weed, Tall White-Top.)
- Eupatorium frustratum B.L. Robinson (CAPE SABLE THOROUGHWORT ) Synonyms:Osmia frustrata(B.L.Rob.) Small. Chromolaena frustrata (B.L.Rob.)
- Synonyms: Cunigunda perfoliata, Eupatorium chapmanii (for some species of Thoroughwort), Osmia frustrata(B.L.Rob.) Small., Chromolaena frustrata (B.L.Rob.)(Synonyms for CAPE SABLE THOROUGHWORT)
- Microthlaspi perfoliatum (L.) F.K. Mey (thoroughwort pennycress)
Distribution and Habitat
- Eupatorium perfoliatum (Boneset or Thoroughwort) is a common plant found in most sections. Its habitat includes bogs and swales.
- Eupatorium serotinum (Late-flowering thoroughwort) is native to North America.
- Eupatorium hyssopifolium (Hyssop-leaf thoroughwort) is native to dry meadows and sandy fields.
- Ageratina adenophora (Croftonweed) is native to Mexico.
- Roundleaf Thoroughwort is native to nearly all of the eastern US
Morphological Characteristics and Growth Habits
- Tall thoroughwort (a member of the sunflower family) can grow up to 6 feet tall and has dull white flowers and distinctive leaves.
- Some Eupatorium species are perennial herbs growing 3-5 feet tall with stout, hairy stems and opposite leaves.
- One plant is like a bush of fragrant, towering, dainty nectar.
- Thoroughwort is an erect, simple or few-branched perennial with a woody base and purple stems. The leaves are opposite, simple, deltoid-ovate and serrulate
- Eupatorium hyssopifolium (Hyssop-leaf thoroughwort) has white flowers and very fine-textured foliage. Flat topped clusters
Etymology
- The name "thoroughwort" originates from the appearance of the plant's branches growing through the leaves. It is derived from "thorough" (meaning "through") and "wort" (an old English word for plant or herb).
Ecological Role
- Croftonweed is native to Mexico