Erigeron canadensis L.

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Erigeron canadensis

Photo: Bart Wursten
Haka Game Park, Cleveland Dam

Erigeron canadensis

Photo: Bart Wursten
Haka Game Park, Cleveland Dam

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Synonyms: Aster canadensis (L.) E.H.L.Krause
Caenotus canadensis (L.) Raf.
Caenotus pusillus Raf.
Conyza canadensis (L.) Cronquist
Conyza parva Cronquist
Conyzella canadensis (L.) Rupr.
Erigeron myriocephalus Rech.f. & Edelb.
Erigeron paniculatus Lam.
Erigeron pusillus Nutt.
Erigeron ruderalis Salisb.
Erigeron setiferus Post ex Boiss.
Erigeron strictus DC.
Inula canadensis Bernh.
Leptilon canadense (L.) Britton
Leptilon pusillum (Nutt.) Britton
Marsea canadensis (L.) V.M.Badillo
Senecio ciliatus Walter
Tessenia canadensis (L.) Bubani
Trimorpha canadensis (L.) Lindm.
Common names: Canadian fleabane (English)
Frequency: Frequent
Status: Introduced
Erect annual herb. Stems simple or sparingly-branched, up to 1.2 m. Leaves linear to linear-lanceolate. Inflorescence a large terminal compound panicle. Capitula numerous, small, funnel-shaped with minute white ray-florets and yellow disk-florets.
Notes: Although less common than the related Erigeron sumatrensis and Erigeron bonariensis, it is still a widespread weed.
Derivation of specific name: canadensis: of Canada
Habitat: Disturbed and cultivated lands, favouring damp soils and high rainfall areas.
Altitude range: (metres)
Flowering time:
Worldwide distribution: Originating from temperate North America, but now a widespread weed.
Zimbabwe distribution: N,W,C,E,S
Growth form(s):
Endemic status:
Red data list status:
Insects associated with this species: Hyalites rahira rahira (Food plant)
Spot characters: Display spot characters for this species

Chapano, C. & Mamuto, M. (2003). Plants of the Chimanimani District National Herbarium and Botanic Garden, Zimbabwe Page 16.

Da Silva, M.C., Izidine, S. & Amude, A.B. (2004). A preliminary checklist of the vascular plants of Mozambique. Southern African Botanical Diversity Network Report No. 30 Sabonet, Pretoria Page 146. as Conyza canadensis

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 24.

Phiri, P.S.M. (2005). A Checklist of Zambian Vascular Plants Southern African Botanical Diversity Network Report No. 32 Page 29. as Conyza canadensis

Wild, H. (1955). Common Rhodesian Weeds Government of Rhodesia, Salisbury Page 68. as Erigeron floribundus (Includes a picture).

Wild, H. (1975). The Compositae of the Flora Zambesiaca area. 4. Astereae. Kirkia 10(1) Pages 41 - 42.

Wursten, B., Timberlake, J. & Darbyshire, I. (2017). The Chimanimani Mountains: an updated checklist. Kirkia 19(1) Page 88.

Other sources of information about Erigeron canadensis:

Our websites:

Flora of Malawi: Erigeron canadensis
Flora of Mozambique: Erigeron canadensis
Flora of Zambia: Erigeron canadensis

External websites:

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

Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2002-24

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2024). Flora of Zimbabwe: Species information: Erigeron canadensis., retrieved 18 May 2024

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