Allocasuarina littoralis, commonly known as black she-oak,[3] is a species of flowering plant in the family Casuarinaceae and is endemic to eastern Australia. It is dioecious, or less commonly a monoecious tree or shrub, that has its leaves reduced to scales, usually in whorls of six to eight, the mature fruiting cones 10–30 mm (0.4–1 in) long containing winged seeds (samaras) 4.0–10 mm (0.2–0.4 in) long.
Allocasuarina littoralis is a dioecious, or less commonly a monoecious tree or shrub, that typically grows to a height of 5–15 m (16–49 ft). Its branchlets are usually up to 200 mm (7.9 in) long, rarely to 350 mm (14 in), the leaves reduced to scale-like teeth 0.3–0.9 mm (0.01–0.04 in) long, arranged in whorls of usually six to eight around the branchlets. The sections of branchlet between the leaf whorls (the "articles") are 4–10 mm (0.2–0.4 in) long and 0.4–1.0 mm (0.02–0.04 in) wide. Male flowers are arranged in spikes 5–50 mm (0.2–2 in) long, in whorls of six to twelve per cm (per 0.4 in), the anthers 0.4–0.8 mm (0.02–0.03 in) long. Female cones are on a peduncle 4–23 mm (0.2–0.9 in) long, the mature cones cylindrical, 10–30 mm (0.4–1 in) long and 8–21 mm (0.3–0.8 in) in diameter containing dark brown to black samaras 4–10 mm (0.2–0.4 in) long.[3][4][5]
^ abcWilson, Karen L.; Johnson, Lawrence A.S. "Allocasuarina littoralis". Royal Botanic Garden Sydney. Retrieved 15 June 2023.
^ ab"Allocasuarina littoralis". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 15 June 2023.
^ abEntwisle, Timothy J.; Stajsic, Val. "Allocasuarina littoralis". Royal Botanic Gardens Victoria. Retrieved 15 June 2023.
