a genus of 17 tree species in the family Casuarinaceae, native to Australia, the Indian subcontinent, southeast Asia, and islands of the western Pacific Ocean.
They are evergreen shrubs and trees growing to 35 m (115 ft) tall. The slender, green to grey-green twigs bearing minute scale-leaves in whorls of 5–20.
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[they] are commonly grown in tropical and subtropical areas throughout the world. The tree has delicate, slender terminal branches, and leaves that are no more than scales, making the tree look more like a wispy conifer. The plants are very tolerant of windswept locations, and are widely planted as windbreaks, although usually not in agricultural situations.
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There were tall coconut palm trees, stately casuarina trees, and slender papaya trees and also ferns and a sqat tree-bush that looked to produce dimpled potatoes.
J. Maarten Troost. The Sex Lives of Cannibals, p.39 (2004)