Click on images to enlarge
dense infestation (Photo: Chris Gardiner)
creeping habit growing in a lawn (Photo: Sheldon Navie)
stems and leaf undersides (Photo: Sheldon Navie)
flowers and leaves (Photo: Sheldon Navie)
flower buds and leaves with two leaflets (Photo: Chris Gardiner)
close-up of flowers and leaves (Photo: Sheldon Navie)
close-up of flower from below (Photo: Sheldon Navie)
immature and mature fruit (Photo: Sheldon Navie)
close-up of seeds (Photo: Tracey Slotta at USDA PLANTS Database)
Chamaecrista rotundifolia (Pers.) Greene var. rotundifolia
Cassia rotundifolia Pers.
Caesalpiniaceae (Queensland, the ACT, Victoria, Tasmania, Western Australia and the Northern Territory)Fabaceae: sub-family Caesalpinioideae (New South Wales)Leguminosae (South Australia)
round-leaf cassia, roundleaf sensitive pea, Wynn cassia
Native to Mexico, Central America (i.e. Costa Rica and Panama), the Caribbean (i.e. Cuba, Jamaica and Puerto Rico) and tropical South America (i.e. Venezuela, Brazil, eastern Bolivia, Colombia, northern Argentina, Paraguay and Uruguay).
Widely naturalised in the coastal and sub-coastal regions of northern and eastern Australia. Its current range extends from the coastal districts of northern New South Wales, through south-eastern, central and northern Queensland, the coastal districts of the Northern Territory to a few locations in northern Western Australia. Also naturalised on Norfolk Island and on Lord Howe Island.
Naturalised overseas in western Africa and south-eastern USA (i.e. Florida).
This species was introduced into Australia as a pasture herb and has become naturalised in pastures, open woodlands and disturbed sites, as well as in riparian forests and on sand dunes. Round-leaf cassia (Chamaecrista rotundifolia var. rotundifolia) is currently of most concern in south-eastern Queensland, where it was recently ranked among the 200 most invasive plant species.
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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