Alien
Hymenachne amplexicaulis (Olive hymenachne)
Hymenachne was introduced into northern Queensland, Australia in the 1970s to use in ponded pastures. It escaped cultivation a few years after its release in 1988. It is spreading throughout the tropical wetlands of northern Australia and is most common in the coastal wetlands of northern Queensland and the Northern Territory
Hymenachne amplexicaulis (Olive hymenachne)
Introduced species management
Illustration of introduced species management
Introduced species management
Salvinia molesta (Giant Salvinia)
Giant salvinia is an aquatic fern, native to south-eastern Brazil. It is a free floating plant that remains buoyant on the surface of a body of water, and is known for its capability to take over large bodies of slow-moving fresh water. The rapid growth rate of Giant Salvinia has resulted in its classification as an invasive weed in some parts of the world such as Australia, United Kingdom, New Zealand, and parts of America
