Casuarina equisetifolia

Casuarina equisetifolia, commonly known as coastal she-oak, horsetail she-oak, ironwood, beach sheoak, beach casuarina or whistling tree is a species of flowering plant in the family Casuarinaceae and is native to Australia, New Guinea, Southeast Asia and India. It is a small to medium-sized, monoecious tree with scaly or furrowed bark on older specimens, drooping branchlets, the leaves reduced to scales in whorls of 7 or 8, the fruit 10–24 mm (0.39–0.94 in) long containing winged seeds (samaras) 6–8 mm (0.24–0.31 in) long. It has been called ironwood, horsetair tree, beach sheoak, and Australian pine, though it is not pine despite some of its conifer like features.