Click on images to enlarge
infestation (Photo: Michael Moerkerk)
habit (Photo: Michael Moerkerk)
stem and leaves (Photo: Michael Moerkerk)
elongated flower cluster (Photo: Michael Moerkerk)
flowers (Photo: Michael Moerkerk)
close-up of flowers (Photo: Michael Moerkerk)
Disa bracteata Sw.
Monadenia bracteata (Sw.) T. Durand & Schinz
African orchid, African weed orchid, African weed-orchid, brown finger orchid, monadenia, South African orchid, South African orchid weed, South African weed orchid
Native to southern Africa (i.e. Cape Province in South Africa).
Widely naturalised in southern Australia (i.e. widespread in south-western Western Australia and south-eastern South Australia and present at several locations in Victoria). Also recently reported from Tasmania (i.e. from one site along a roadside near Bridport in north-eastern Tasmania).
This species is regarded as a significant environmental weed in Western Australia, South Australia and Victoria, and as a potential environmental weed in Tasmania. Two Natural Resource Management regions recently listed it as a priority environmental weed and it is actively managed by community groups in some areas.
South African weed orchid (Disa bracteata) invades native bushland and competes with and replaces the native ground flora. It therefore has the potential to impact on rare and endangered plants in the understorey. It invades conservation areas (e.g. the Lower Glenelg National Park in Victoria and Kaiserstuhl Conservation Park in South Australia) and develops underground tubers that make it difficult to eradicate.
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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