Ageratum conyzoides L.

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Ageratum conyzoides

Photo: Bart Wursten
Mukuvisi Woodland

Ageratum conyzoides

Photo: Mark Hyde
Alexandra Park, Harare

Ageratum conyzoides

Photo: Bart Wursten
Old cottages at Katiyo Tea Estate

Ageratum conyzoides

Photo: Bart Wursten
Road down to Nyamuakwarara River, John Meikle Research Station

Ageratum conyzoides

Photo: Bart Wursten
Vumba rd near Essex rd turn off, Vumba

Ageratum conyzoides

Photo: Petra Ballings
Globe Rock, Vumba

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Synonyms: Ageratum conyzoides L. subsp. conyzoides
Common names:
Frequency: Common
Status: Introduced
Annual herb, 10-60 cm. Leaves: base usually blunt or rounded, rarely cordate. Florets blue or white. Phyllaries 3-4 mm, oblong, abruptly acuminate, sparingly if at all hairy on the back, erose and ciliate. Style arms exserted 1 mm from corolla tube.
Derivation of specific name: conyzoides: resembling the genus Conyza
Habitat: Disturbed places, abandoned cultivation, open woodland and along streams and seepage zones.
Altitude range: (metres) 700 - 1660 m
Flowering time:Oct - May
Worldwide distribution: Pantropical weed, probably of South American origin.
Zimbabwe distribution: N,W,C,E,S
Growth form(s):
Endemic status:
Red data list status:
Insects associated with this species:
Spot characters: Display spot characters for this species

Baumann, G. (2005). Photographic Guide to Wildflowers of Malawi Wildlife and Environmental Society of Malawi Pages 166 - 167. (Includes a picture).

Pickering, H. & Roe, E. (2009). Wild Flowers of the Victoria Falls Area Helen Pickering, London Page 32. (Includes a picture).

Setshogo, M.P. (2005). Preliminary checklist of the plants of Botswana. Sabonet Report no. 37. Sabonet, Pretoria and Gaborone Page 30.

Strugnell, A.M. (2006). A Checklist of the Spermatophytes of Mount Mulanje, Malawi Scripta Botanica Belgica 34 National Botanic Garden of Belgium Page 50.

Timberlake, J.R. & Childes, S.L. (2004). Biodiversity of the Four Corners Area: Technical Reviews Volume Two (Chapter 5-15) Appendix 5-1: Plant Checklist Occasional Publications in Biodiversity 15 Page 198.


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Other sources of information about Ageratum conyzoides:

Our websites:

Flora of Botswana: Ageratum conyzoides
Flora of Caprivi: Ageratum conyzoides
Flora of Malawi: Ageratum conyzoides
Flora of Mozambique: Ageratum conyzoides
Flora of Zambia: Ageratum conyzoides

External websites:

African Plant Database: Ageratum conyzoides
Biodiversity Explorer (Biodiversity of southern Africa): Ageratum conyzoides
EOL (Encyclopedia of Life): Ageratum conyzoides
ePIC (electronic Plant Information Center): Ageratum conyzoides
Flora Zambesiaca web site: Ageratum conyzoides
Google: Web - Images - Scholar
GRIN (Germplasm Resources Information Network) taxonomy for plants report for Ageratum conyzoides
IPNI (International Plant Names Index): Ageratum conyzoides
Ispot Southern Africa : Ageratum conyzoides
JSTOR Plant Science: Ageratum conyzoides
Kew Herbarium catalogue: Ageratum conyzoides
Tropicos: Ageratum conyzoides
West African Plants database: Ageratum conyzoides

Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2002-16

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2016). Flora of Zimbabwe: Species information: Ageratum conyzoides., retrieved 31 May 2016

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