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The Australian pine tree (Casuarina equisetifolia) belongs to the family Casuarinaceae. It is a tall evergreen tree that is native to Southeast Asia, Northern Australia and the Pacific Islands. This tree grows in coastal forests or shoreline, and up to 6-35 m in height. The foliage consists of slender, much-branched green to gray-green, 23-38 cm long twigs, bearing minute scale-leaves in whorls of 6-8. It is monoecious, with the male flowers in simple spikes and the female flowers on short peduncles. The fruit is an ovate woody structure, superficially resembling a conifer cone made up of numerous carpels each containing a single seed with a small wing.
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