Seeds of South Australia
Casuarina glauca (Casuarinaceae)
Swamp Oak (Guman)
List of species for Casuarina
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Seed collecting:
January to December
Herbarium regions:
Flinders Ranges, Eyre Peninsula, Northern Lofty, Murray, Yorke Peninsula, Southern Lofty, South Eastern
NRM regions:
Adelaide and Mount Lofty Ranges, Eyre Peninsula, Northern and Yorke, South Australian Arid Lands, South Australian Murray-Darling Basin, South East
AVH map:
Australian distribution map (external link)
SA Census:
Census of South Australian plants (external link)     [genus Casuarina]
Name derivation:
Casuarina was first used by Rumphius (1743) in allusion to the supposed resemblance of the "foliage" of Casuarina equisetifolia to the plumage of the Cassowary, which is from the Malay 'kesuari', latter being latinised as CasuariusGlauca from the Latin 'glaucus' meaning bluish; alluding to the appearance of the plant.
Distribution:
Native to coastal regions of Queensland New South Wales. Introduced to South Australia and have been recorded from the southern part of South Australia, growing as an ornamental and sometimes planted for soil stabilisation near creeks and rivers. Also introduced to Western Australia and Victoria. 
Status:
Introduced and common in South Australia. Introduced to Western Australia and Victoria. Native and common in Queensland and New South Wales.
Plant description:
Tree to 20 m high frequently producing root suckers, with finely fissured, scaly, grey-brown bark and spreading to drooping stems (looks like leaves), to 38 cm long. Stem segments (articles) to 20 mm long and 1.2 mm diameter, glabrous, occasionally waxy with flat to slightly rounded ridges. Teeth (reduced leaves) 12–17, to 0.9 mm long, erect, recurved on new shoots. Male spikes to 4 cm long. Cones rusty to white hair, becoming glabrous with cone body to 18 mm long and 9 mm diameter.
Fruit type:
Woody cylindrical cone, covered in rusty or white hairs but becoming glabrous later, with numerous large protruding valves.
Embryo type:
Investing.
Seed collecting:
Cones can be collected anytime as mature cones remain on the female plant. Collect cones that have closed valves from the lower part of the stem as these are more mature.
Seed cleaning:
Place cones in a tray and leave to dry for 2-3 weeks. This will allow the valves to dry and open releasing the seeds. Place the dried cones in a bucket and shake gently to dislodge the seeds. Use a sieve to separate seeds from the unwanted material. Store the seeds with a desiccant such as dried silica beads or dry rice, in an air tight container in a cool and dry place.
Seed germination:
Seeds are non-dormant, viable seed should germinate readily.