Ageratina adenophora (Spreng.) R.M. King & H. Rob.

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Ageratina adenophora

Riverine fringe, on limestone
Apr 1992
Photo: Mike Bingham

Ageratina adenophora

Weed in fish ponds
Mubuyu Farm, Mazabuka district
Oct 1992
Photo: Mike Bingham

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Synonyms: Eupatorium adenophorum Spreng.
Common names:
Status: Introduced
Perennial herb to 1(-2.5) m. Stems reddish-brown and markedly glandular-pubescent, especially above. Leaves opposite: petiole up to 4 cm; lamina up to 10 × 6 cm, ovate or rhombic, dark green above, paler beneath; base cuneate; apex acute to acuminate; margin crenate. Capitula c. 5 × 5 mm, crowded in corymbs. Phyllaries 2-seriate, lanceolate, glandular-pubescent. Flowers white, often appearing in the winter. Achenes c. 2 mm, ± cylindric, smoothly 5-angled. Pappus of numerous scabrid bristles.
Type location:
Derivation of specific name: adenophora: gland-bearing
Habitat: Seasonally inundated grassland, fish ponds.
Altitude range:
Flowering time:Aug - Sep
Worldwide distribution: Native of Mexico; c.290 species in the Eastern USA, C and W South America; 2 species naturalised in the Old World.
Zambian distribution (Flora Zambesiaca): C,S
Zambian distribution (Provinces): Lk,S
Growth form(s):
Endemic status:
Red data list status:
Insects associated with this species:
Spot characters: Display spot characters for this species
Content last updated: Thursday 7 July 2016

Beentje, H.J. & Ghazanfar, S.A. (eds.) (2005). Compositae (Part 3) Flora of Tropical East Africa Pages 831 - 833. (Includes a picture).

Mapaura, A. & Timberlake, J. (eds) (2004). A checklist of Zimbabwean vascular plants Southern African Botanical Diversity Network Report No. 33 Sabonet, Pretoria and Harare Page 23.

Other sources of information about Ageratina adenophora:

Our websites:

Flora of Zimbabwe: Ageratina adenophora
Flora of Zimbabwe: cultivated Ageratina adenophora

External websites:

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

Copyright: Mike Bingham, Annette Willemen, Bart Wursten, Petra Ballings and Mark Hyde, 2011-23

Bingham, M.G., Willemen, A., Wursten, B.T., Ballings, P. and Hyde, M.A. (2023). Flora of Zambia: Species information: Ageratina adenophora., retrieved 28 November 2023

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