Hairy Knotweed
Persicaria attenuata (R.Br.) Soják

Persicaria attenuata (R.Br.) Soják is a flowering plant species in the Polygonaceae family, commonly known as Hairy Knotweed. It is native to regions including Australia and Asia, and is typically found in wetland or stream habitats.
Description
Persicaria attenuata is a member of the knotweed genus and the buckwheat family (Polygonaceae). It is distributed across several regions, including the Garden Route National Park, New Guinea, the Lesser Sunda Islands, Vanuatu, and various Australian states such as New South Wales, Queensland, and Western Australia. This species is adapted to moist environments and is often found in wetlands or along streams. It was first published in 1974.
Other common names
Hairy KnotweedWatersmart WeedSmart Weed
Distribution
Garden Route National Park · Global · Lesser Sunda Is. · New Guinea · New South Wales · Northern Territory · Queensland · South Australia · Vanuatu · Victoria · Western Australia
Synonyms
Polygonum attenuatum