Casuarina cristata, commonly known as belah or muurrgu, is a species of flowering plant in the family Casuarinaceae and is endemic to inland eastern Australia. It is a tree with fissured or scaly bark, sometimes drooping branchlets, the leaves reduced to scales in whorls of 8 to 12, the fruit 13–18 mm (0.5–0.7 in) long containing winged seeds (samaras) 6.0–10.5 mm (0.2–0.4 in) long.

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