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Alisma plantago-aquatica, also known as European water-plantain, common water-plantain or mad-dog weed, is a perennial flowering plant widespread across most of Europe and Asia from Portugal and Morocco to Japan, Kamchatka and Vietnam. It is also regarded as native in northern and central Africa as far south as Tanzania. It is reportedly naturalized in southern ...more ↓
Althenia bilocularis is a plant found in both Australia and New Zealand, in fresh to brackish waters. In Australia it is found in all mainland states with the exception of the Northern Territory. In New Zealand it is found on the North, South and Chatham Islands.
Althenia cylindrocarpa is a plant found in fresh to brackish waters in Australia. This species has been transferred from Lepilaena.