It is a dioecious perennial plant. It is coarse and prickly, It often forms mats where water is abundant. Its appearance in places from which it had been absent can be an indication of rising soil salinity.
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Growing in damp, saline areas such as the fringes of saltmarshes
South Eastern Australia From South Australia to Victoria and Tasmania
It grows to about 30 cm in height, with creeping rhizomes up to 1 m long