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Dicots
Conyza sumatrensis
EOL Text
Barcode of Life Data Systems (BOLDS) Stats
Public Records: 1
Specimens with Barcodes: 2
Species With Barcodes: 1
Conyza sumatrensis is an annual herb native to North America,[1] but naturalised worldwide. In the British Isles it is known as Guernsey fleabane.[2]
In certain countries the plant has started to exhibit resistance to herbicides.[3]
In Britain, of the alien British Conyza species, this is the second most abundant (after C. canadensis) and is typically found in London and the South East of England. It was first recorded in London by Brian Wurzell in 1984,[4] and noted in France at Saint-Sozy (Dordogne) in 2006.[5]
Plant Details[edit]
| Type | Details | Comments |
|---|---|---|
| Scientific Name | Conyza sumatrensis | Synonyms: Conyza albida, Conyza altissima, Conyza nandina |
| Common Names | fleabane, tall fleabane, broad-leaved fleabane, white horseweed, Sumatran fleabane, Guernsey fleabane | |
| Family | Asteraceae | |
| Seasonality | Annual | |
| Height | 1-2 metres when fully grown (summer/autumn) | |
| Description | Flowers are white rather than purple-pink. Its leaves are like dandelion leaves, but longer, thinner and more like primrose leaves in colour and texture. Its seeding heads are like dandelions, but straw coloured and smaller.[6] | |
| Toxicity | [citation needed] | |
| Threat to other plants | It poses a significant threat to wildlife conservation areas and other reserves. Its invasive nature and competitive ability could suppress the native flora in the more open habitats it favours. | |
| Origin | North America | |
| Naturalised | South America Europe[7] Africa[8] Asia[9] Australasia[10] |
References[edit]
- ^ Conyza sumatrensis, Tall Fleabane, Royal Botanic Gardens, New South Wales, Australia
- ^ "BSBI List 2007" (xls). Botanical Society of Britain and Ireland. Retrieved 2014-10-17.
- ^ Sumatran Fleabane, Weedscience.org
- ^ Fleabane in London
- ^ Mark Galliott (June 2006). "France – The Dordogne". Tour Report. Naturetrek Wildlife Holidays. Archived from the original on 2007-09-29. Retrieved 2011-10-18.
- ^ See pictures at International Environmental Weed Foundation
- ^ Fleabane in Holland
- ^ Flora of Zimbabwe: Conyza sumatrensis
- ^ Sumatran Fleabane in Japan
- ^ Pacific Island Ecosystems at Risk (PIER): Conyza sumatrensis
| License | http://creativecommons.org/licenses/by-sa/3.0/ |
| Rights holder/Author | Wikipedia |
| Source | http://en.wikipedia.org/w/index.php?title=Conyza_sumatrensis&oldid=634998346 |
Sinai.
| License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
| Rights holder/Author | Bibliotheca Alexandrina, BA Cultnat, Bibliotheca Alexandrina - EOL Ar |
| Source | http://lifedesk.bibalex.org/ba/pages/2480 |
Native to south America, naturalized in many temperate regions of the Old World.
| License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
| Rights holder/Author | Bibliotheca Alexandrina, BA Cultnat, Bibliotheca Alexandrina - EOL Ar |
| Source | http://lifedesk.bibalex.org/ba/pages/2480 |
Edges of cultivation.
| License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
| Rights holder/Author | Bibliotheca Alexandrina, BA Cultnat, Bibliotheca Alexandrina - EOL Ar |
| Source | http://lifedesk.bibalex.org/ba/pages/2480 |
Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 4
Species With Barcodes: 1
Tall erect annual, up to 2 m. It can be distinguished from the very similar C. bonariensis by the side branches always being shorter than the main stem, and the pappus being straw-coloured to pale brown.
sumatrensis: of Sumatra, Indonesia
Notes: Hill slopes
Possibly originating from South America but now an abundant pantropical weed.