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© Paul Busselen, KULAK
 
 
© Paul Busselen, KULAK
 
Senecio inaequidens - South african ragwort

French name:  Sénecon sud-africain
Dutch name: Bezemkruiskruid
Family: Asteraceae
Group: Vascular plants
Origin: Africa
Habitat: terrestrial
Introduction:  accidental
ISEIA Score : 10
 
Naturalization in Belgium
First observation in the wild: 1892
Invasion stage: spread
Spatial distribution: widespread
Invasiveness
Reproduction in the wild: yes
Dispersion potential: high
Natural habitats: high
More on invasiveness: Senecio inaequidens mainly thrives in ruderal and disturbed areas. It may be also found in rock outcrops, open grasslands and sand dunes. Minute achenes (3 mm) are mainly dispersed by wind, but also by water and animals at long distances.
Distribution in Belgium
Established populations
absent from district
isolated populations (1-5 localities per district)
widespread (>5 localities per district)
Endangered areas
low risk
medium risk
high risk

Endangered Natura 2000 habitats ():
grasslands: 6110*6120*6210*
rocky habitats: 8160*8110
Impacts on Species
Predation / Herbivory: low
Competition: medium
Disease transmission: low
Genetic effects: unknown
Impacts on Ecosystems
Nutrient cycling: medium
Physical alteration: medium
Natural successions: medium
Food web alteration: low
More on impacts: Senecio inaequidens does not demonstrably pose a threat to indigenous species or plant communities at present in Western Europe. The plant is toxic for livestock.
Data Source & References
Authors: Branquart Etienne, Vanderhoeven Sonia, Van Landuyt Wouter, Van Rossum Fabienne, Verloove Filip
Published on:  11 July 2008
Last update:  22 December 2010
References:
AEF (2006)
Cartes provisoires de la distribution de néophytes en Wallonie.
Unpublished document.
CPS-SKEW (2006)
Polygonum polystachium.
From online fact sheets of the Swiss Commission for Wild Plants Conservation
Heger, T. & Böhmer, H.J. (2006)
Invasive alien species fact sheet Senecio inaequidens.
From online database of the North European and Baltic network on invasive alien species (NOBANIS).
Lambinon, J., Delvosalle, L. & Duvigneaud, J. (2004)
Nouvelle fore de la Belgique, du Grand-Duché de Luxembourg, du Nord de la France et des régions voisines.
Editions du Patrimoine du Jardin botanique national de Belgique, Meise.
Lohmeyer, W. & Sukopp, H. (2001)
Agriophyten in der Vegetation Mitteleuropas.
In: Brandes, D. (ed.) Adventivpflanzen. Beiträge zur Biologie, Vorkommen und Ausbreitungsdynamik von Archäophyten und Neophyten in Mitteleuropa, vol 8. Universitätsbibliothek Braunschweig, Braunschweig, pp 179-220.
Muller, S. (2004)
Plantes invasives en France : état des connaissances et propositions d'actions.
Publication scientifique du Museum d'Histoire naturelle, Patrimoines naturels n°62.
Van Landuyt, W., Hoste, I., Vanhecke, L., Van den Bremt, P. Vercruysse, W. & De Beer, D. (2006)
Atlas van de Flora van Vlaanderen en het Brussels gewest.
Nationale Plantentuin en het Instituut voor Natuur- en Bosonderzoek i.s.m. Flo.Wer vzw.
Verloove, F. (2006)
Catalogue of the Neophytes in Belgium (1800-2005).
Scripta Botanica Belgica 39, 89 pp.
Other Internet Links

 
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