Click on images to enlarge
habit (Photo: Sheldon Navie)
close-up of hairy younger stem and bases of paired leaves (Photo: Sheldon Navie)
leaves and young flower cluster (Photo: Sheldon Navie)
close-up of leaves with toothed margins (Photo: Sheldon Navie)
close-up of leaf underside (Photo: Sheldon Navie)
flower cluster (Photo: Sheldon Navie)
close-up of whitish flowers subtended by small hairy bracts (Photo: Sheldon Navie)
immature fruit and flowers in an older, more elongated, cluster (Photo: Sheldon Navie)
Stachytarpheta australis Moldenke
Stachytarpheta dichotoma (Ruiz & Pav.) Vahl (misapplied)
branched porterweed, snake weed, snakeweed, white snakeweed
Native to Mexico, Central America, the Caribbean and South America, south to Peru and Argentina.
Widely naturalised in northern Australia (i.e. in northern Queensland and the north-western parts of the Northern Territory) and also occasionally naturalised in south-eastern Queensland.
Naturalised overseas in Hawaii and Indonesia.
White snakeweed (Stachytarpheta australis) is regarded as an environmental weed in northern Australia (i.e. in the Northern Territory 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.
The mobile application of Environmental Weeds of Australia is available from the Google Play Store and Apple iTunes.