8816.030 Ageratina Spach

EUPATORIUM L.

Beentje, H.J. & Ghazanfar, S.A. (eds.) (2005) Compositae (Part 3) Flora of Tropical East Africa

Description of the genus

Perennial herbs (in ours). Leaves opposite. Capitula in corymbs, homogamous, discoid. Phyllaries 1-many-seriate. Receptacular scales 0. Corolla 4- or 5-lobed, purplish, bluish or white. Achenes 5-angled. Pappus of numerous bristles in 1-3 series.

Worldwide: c.290 species in the Eastern USA, C and W South America; 2 species naturalised in the Old World.

Zambia: 1 taxon.

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Links to taxa: View: living plant images - herbarium specimen images - all images for this genus

Species	FZ divisions	Content
adenophora (Spreng.) R.M. King & H. Rob.	C,S	Description, Image

Other sources of information about Ageratina:

Our websites:

Flora of Zimbabwe: Ageratina
Flora of Zimbabwe: cultivated Ageratina

External websites:

African Plants: A Photo Guide (Senckenberg): Ageratina
BHL (Biodiversity Heritage Library): Ageratina
EOL (Encyclopedia of Life): Ageratina
GBIF (Global Biodiversity Information Facility): Ageratina
Google: Web - Images - Scholar
iNaturalist: Ageratina
IPNI (International Plant Names Index): Ageratina
JSTOR Plant Science: Ageratina
Mansfeld World Database of Agricultural and Horticultural Crops: Ageratina
Plants of the World Online: Ageratina
Tropicos: Ageratina
Wikipedia: Ageratina

Copyright: Mike Bingham, Annette Willemen, Nicholas Wightman, Bart Wursten, Petra Ballings and Mark Hyde, 2011-25

Bingham, M.G., Willemen, A., Wightman, N., Wursten, B.T., Ballings, P. and Hyde, M.A. (2025). Flora of Zambia: Genus page: Ageratina.
https://www.zambiaflora.com/speciesdata/genus.php?genus_id=1470, retrieved 12 February 2025

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