Click on images to enlarge
infestation in a slow-moving waterway (Photo: Trevor James)
habit (Photo: Trevor James)
floating leaves (Photo: Rob and Fiona Richardson)
flower clusters (Photo: Rob and Fiona Richardson)
close-up of flowers (Photo: Rob and Fiona Richardson)
close-up of flowers from side-on (Photo: Trevor James)
Aponogeton distachyos L. f.
Aponogeton distachyon L. f., orth. var.
Cape hawthorn, Cape pond lily, Cape pond weed, Cape pond-lily, Cape pondlily, Cape pondweed, Cape water hawthorn, Cape water-hawthorn, Cape-pondweed, dog with two tails, water hawthorn
Native to southern Africa (i.e. Cape Province in South Africa).
Naturalised in some parts of south-eastern Australia (i.e. in central and southern New South Wales, southern Victoria, Tasmania and south-eastern South Australia).
Also naturalised overseas in Europe (i.e. France and the UK), New Zealand, Argentina and south-western USA (i.e. California).
Cape pond lily (Aponogeton distachyos) is regarded as an environmental weed in Victoria and as a minor environmental weed or potential environmental weed in other parts of south-eastern Australia. This species is grown as an ornamental in outdoor aquaria and water features, and is popular because it grows and flowers during the winter months. It has escaped cultivation and invaded slow-moving freshwater creeks, rivers, lakes, dams and other water bodies.
Dense Cape pond lily (Aponogeton distachyos) infestations can alter aquatic ecosystems and shade out the native submerged flora. They also have the ability to change the physical and chemical characteristics of invaded lakes and waterways. This plant spreads by seeds and tubers and tends to invade sites in cooler temperate regions.
It is currently mainly a problem in Victoria, where it has become naturalised in several locations. For example, there is an outbreak of Cape pond lily (Aponogeton distachyos) located at Jackson's Creek in Osborne near Melbourne. It is regarded as a high threat weed species in aquatic herbland vegetation in the Warrnambool Plain bioregion and in aquatic grassy wetlands in the East Gippsland Lowlands bioregion. It is also listed as a common invasive garden escape in the Gannawarra and Loddon Shires.
Cape pond lily (Aponogeton distachyos) is also a minor weed of small water bodies in New South Wales and has been recorded in some conservation areas in south-eastern South Australia (i.e. Scott Creek Conservation Park and Cleland Conservation Park).
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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