Click on images to enlarge
infestation (Photo: Sheldon Navie)
habit (Photo: Sheldon Navie)
close-up of finely hairy stems and relatively long leaf stalks (Photo: Sheldon Navie)
leaves (Photo: Sheldon Navie)
close-up of leaves (Photo: Sheldon Navie)
immature and mature fruit (Photo: Sheldon Navie)
seedling (Photo: Sheldon Navie)
close-up of mature fruit with 'seeds' (Photo: Sheldon Navie)
Sida spinosa L.
false mallow, Indian mallow, prickly fanpetals, prickly mallow, prickly sida, prickly-mallow, spiny sida, teaweed, thistle mallow
The exact origin of this species is obscure, but it is thought to have come from tropical America. It is sometimes regarded as being native to large parts of northern and eastern Australia (i.e. in northern and north-western Western Australia, the northern and central parts of the Northern Territory, Queensland, and some parts of northern and eastern New South Wales), but it may be an early introduction to Australia.
It is regarded by many as being widely naturalised throughout northern and eastern Australia (i.e. Queensland, northern and central New South Wales, northern and north-western Western Australia, and the northern and central parts of the Northern Territory).
Also naturalised on several Pacific islands (i.e. French Polynesia, Hawaii, Nauru, New Caledonia and Tonga).
Spiny sida (Sida spinosa) is a widespread weed of crops, pastures, roadsides, disturbed sites and waste areas in northern Australia, but also grows in grasslands, open woodlands and in riparian areas. It is often regarded as an environmental weed in Queensland, particularly in the rangeland areas of central and northern 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.
Copyright © 2016. All rights reserved. Identic Pty Ltd. Special edition of Environmental Weeds of Australia for Biosecurity Queensland.
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