Erigeron sumatrensis Retz.

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Photo: Bart Wursten
Cleveland Dam, Harare

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Synonyms:	Aster ambiguus E.H.L.Krause Baccharis ivifolia Blanco Conyza albida Willd. ex Spreng. Conyza altissima Naudin ex Debeaux Conyza ambigua DC. Conyza bonariensis (L.) Cronquist var. microcephala (Cabrera) Cabrera Conyza erigeroides DC. Conyza floribunda Kunth Conyza groegeri V.M.Badillo Conyza naudinii Bonnet Conyza sumatrensis (Retz.) E. Walker Dimorphanthes ambigua C.Presl Dimorphanthes floribunda Cass. Erigeron albidus (Willd. ex Spreng.) A.Gray Erigeron ambiguus Sch.Bip. Erigeron floribundus (Kunth) Sch. Bip. Erigeron musashensis Makino Erigeron naudinii (Bonnet) Humbert Eschenbachia ambigua Moris
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Frequency:
Status:
Description:	Tall erect annual, up to 2 m. It can be distinguished from the very similar C. bonariensis by the inflorescence being tall paniculate wit the side branches always being shorter than the main stem; the involucral bracts being green, not red-tipped, and the pappus being straw-coloured to pale brown.
Notes:
Derivation of specific name:	sumatrensis: of Sumatra, Indonesia
Habitat:
Altitude range:
Flowering time:	Oct - May
Worldwide distribution:	Possibly originating from South America but now an abundant almost cosmopolitan weed.
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Endemic status:
Red data list status:
Insects associated with this species:
Spot characters:	Display spot characters for this species
Literature:	Burrows, J.E. & Willis, C.K. (eds) (2005). Plants of the Nyika Plateau Southern African Botanical Diversity Network Report No. 31 SABONET, Pretoria Page 87. as Conyza albida (Includes a picture). Chapano, C. & Mugarisanwa, N.H. (2003). Plants of the Matobo District National Herbarium and Botanic Garden, Zimbabwe Page 10. As Conyza albida 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 albida 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. as Conyza sumatrensis Phiri, P.S.M. (2005). A Checklist of Zambian Vascular Plants Southern African Botanical Diversity Network Report No. 32 Page 29. as Conyza albida Setshogo, M.P. (2005). Preliminary checklist of the plants of Botswana. Sabonet Report no. 37. Sabonet, Pretoria and Gaborone Page 32. as Conyza albida Wild, H. (1975). The Compositae of the Flora Zambesiaca area. 4. Astereae. Kirkia 10(1) Pages 43 - 45. as Conyza sumatrensis

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Flora of Botswana: Erigeron sumatrensis
Flora of Malawi: Erigeron sumatrensis
Flora of Mozambique: Erigeron sumatrensis
Flora of Zambia: Erigeron sumatrensis
Flora of Zimbabwe: Erigeron sumatrensis

External websites:

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