Click on images to enlarge
habit (Photo: Sheldon Navie)
habit prior to flowering with larger lower leaves (Photo: Sheldon Navie)
habit in flower with smaller upper leaves (Photo: Sheldon Navie)
close-up of lower leaves with lobed bases and irregularly-toothed margins (Photo: Sheldon Navie)
close-up of small yellow flower-head (Photo: Jackie Miles)
much smaller upper leaves and immature fruit (Photo: Sheldon Navie)
close-up of immature fruit with five elongated spreading floral bracts (Photo: Sheldon Navie)
close-up of mature fruit showing the sticky hairs on the floral bracts (Photo: Sheldon Navie)
seedlings (Photo: Sheldon Navie)
young plant (Photo: Sheldon Navie)
Sigesbeckia orientalis L.
Sigesbeckia orientalis L. subsp. orientalis
Asteraceae (Queensland, New South Wales, the ACT, Victoria, Tasmania, Western Australia and the Northern Territory)Compositae (South Australia)
common St. Paul's wort, Indian weed, Indian-weed, Indianweed, nightshade, oriental sigesbeckia, sigesbeckia, small yellow crown-beard, St. Paul's wort, yellow crown-beard, yellow weed
Native to the Indian sub-continent, south-eastern Asia, Papua New Guinea and eastern Australia.
In Australia it is generally considered to be native to Queensland, New South Wales, Victoria and some parts of South Australia.
Indian weed (Sigesbeckia orientalis) is sometimes considered to be naturalised in eastern Australia (i.e. in Queensland, New South Wales, Victoria and some parts of South Australia). However, it is certainly naturalised in many parts of Western Australia and sparingly naturalised in Tasmania. It is possibly also naturalised naturalised on Norfolk Island.
Also naturalised in New Zealand and on several Pacific islands (i.e. Fiji, French Polynesia, Hawaii, New Caledonia and Tonga).
Indian weed (Sigesbeckia orientalis) is regarded as an environmental weed in Western Australia, and was listed as a moderately important species is the recent Environmental Weed Strategy of Western Australia.
Many regard it to be native to Queensland, however it was recently included among the list of the top 200 most invasive plants in south-eastern Queensland.
Fact sheets are available from Department of Employment, Economic Development and Innovation (DEEDI) service centres and our Customer Service Centre (telephone 13 25 23). Check our website at www.biosecurity.qld.gov.au to ensure you have the latest version of this fact sheet. The control methods referred to in this fact sheet should be used in accordance with the restrictions (federal and state legislation, and local government laws) directly or indirectly related to each control method. These restrictions may prevent the use of one or more of the methods referred to, depending on individual circumstances. While every care is taken to ensure the accuracy of this information, DEEDI does not invite reliance upon it, nor accept responsibility for any loss or damage caused by actions based on it.
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