Asteraceae

Eupatorium L.

First published in Sp. Pl.: 836 (1753)
This genus is accepted
The native range of this genus is Central & E. Canada to NE. Mexico, Cuba, SE. & S. Brazil to Paraguay, NW. Africa, Temp. & Subtropical Eurasia.

Descriptions

Ghazanfar, S. A., Edmondson, J. R. & Hind, D. J. N. (Eds). (2019). Flora of Iraq, Volume 6: Compositae.Kew Publishing

Morphology General Habit
Herbs, annual to perennial-Leaves opposite or verticillate, upper leaves subopposite to alternate, lamina linear to ovate, deltate, or 3-lobed, serrate to subentire
Morphology Reproductive morphology Inflorescences
Inflorescence a corymbose or pyramidal panicle
Morphology Reproductive morphology Inflorescences Capitulum
Capitula discoid; phyllaries 10–22, weakly to strongly subimbricate, 2–5-seriate, sometimes inner phyllaries deciduous; receptacle flat or weakly convex, epleaceous
Morphology Reproductive morphology Flowers Florets
Florets 3–23; corollas white to purple, lavender, or pink, narrowly funnelform or with constricted basal tube and narrowly to broadly campanulate limb, outer surface with glands often concentrated at base of throat and on outer surfaces of lobes, rarely with a few hairs, lobes 5, usually slightly longer than wide; anther collar cylindrical; anther appendages large, ovate-triangular, c. 1.5 × as long as wide; style base puberulent or rarely glabrous, with or without node; style branches filiform to slightly broadened or flattened distally, papillose
Morphology Reproductive morphology Fruits
Achenes prismatic, 5-ribbed; carpopodium not or slightly differentiated; pappus setae 25–40, barbellate, persistent, apical cells with rounded to shortly acute tips.
Distribution
32 species in Europe, Asia and eastern N. America.
[FIQ]

Sources

  • Flora of Iraq

    • Ghazanfar, S. A., Edmondson, J. R. (Eds). (2013-2019). Flora of Iraq, Volumes 5.1, 5.2 and 6.0. Kew Publishing
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Herbarium Catalogue Specimens

    • 'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.

  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2025. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0

  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2025. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0