Plants of South Eastern New South Wales
Casuarina glauca
Common name
Swamp oak
Family
Casuarinaceae
Where found
In brackish to saline situations along coastal streams and lakes, and somewhat farther inland along major river valleys. Exposed headlands. Coastal north from Bermagui. Ranges and eastern part of the tablelands north of Mittagong.
Notes
Tree to 20 m high or shrub to about 2 m high, frequently producing root suckers. Branchlets hanging down, to 38 cm long. Leaves very small, forming whorls of 12–20 erect teeth on the branchlets. Teeth on young permanent shoots curving out. Articles 8–20 mm long, 0.9–1.2 mm in diameter, distinctly broader at the tips, smooth, sometimes waxy. Male and female flowers on different trees. Male flowers brown, in elongated catkin-like clusters. Female flowers red, in tight clusters, appearing single. Male spikes 1.2–4 cm long, with 7–10 whorls per cm. Cone body 9–18 mm long, 7–12 mm in diameter, bracteoles broad-pointed, thinly woody, prominent, extending well beyond the cone body. Mature 'seeds' grey or yellow-brown, dull, 3.5–5.0 mm long, with one wing.
Introduced to Vic.
Hyridises naturally with Casuarina cunninghamiana subsp. cunninghamiana.
PlantNET description: http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Casuarina~glauca
(accessed 7 January, 2021)
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