Casuarina glauca Sieber
Swamp she-oak (Casuarina glauca) is a long-lived, evergreen tree that is native to eastern Australia. It was likely introduced to New Zealand as an ornamental tree and was first recorded in the wild (naturalised) in 1946. The tree grows up to about 20 metres tall and has grey, fissured bark and fine, drooping branchlets made up of jointed green stems. The true leaves are tiny scales arranged in whorls around the joints. It produces separate male and female flowers, which develop into small, woody cones containing winged seeds. It tolerates drought, wind, salt spray, waterlogging and a range of soil types. It reproduces by seed which is dispersed by wind and vegetatively by root suckers that spread to form dense colonies.
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