”It is highly invasive and little bits break off it easily and start new plants,” he said. ”We think there is a risk of it getting out of Lake Burley Griffin and into the national waterways.”
A Department of Territory and Municipal Services spokeswoman said she was aware of the plant’s existence and the department would respond once the final stages of its identification were complete.
Water watch coordinator for Molonglo Catchment Group Stephen Skinner said the introduced species was a nightmare to remove and would require dredging.
[Photo courtesy Wikipedia]