Seeds of South Australia
Allocasuarina pusilla (Casuarinaceae)
Heath Oak-bush
List of species for Allocasuarina
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Seed collecting:
January to December
Herbarium regions:
Eyre Peninsula, Northern Lofty, Murray, Yorke Peninsula, Southern Lofty, South Eastern
NRM regions:
Adelaide and Mount Lofty Ranges, Northern and Yorke, South Australian Murray-Darling Basin, South East
IBRA regions
SUMMARY
Bridgewater (NCP01)Naracoorte Coastal Plain
 Rare   (IUCN: RA d(ii))   [edge of range]
Glenelg Plain (NCP02) 
 Rare   (IUCN: RA d(ii))   [unusual]
Lucindale (NCP03) 
 Least Concern
Tintinara (NCP04) 
 Least Concern
Fleurieu (KAN02)Kanmantoo
 Near Threatened   [lots in Newland Head, Cox Scrub]
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Vulnerable   (IUCN: VU B2ab(i,ii,iii); D2)   (Probable Decline)   [localised; limited habitat]
Southern Yorke (EYB01)Eyre Yorke Block
 Least Concern   (Probable Decline)   [Coastal development]
Eyre Hills (EYB03) 
 Least Concern
Talia (EYB04) 
 Rare   (IUCN: RA d(i,ii))
Murray Mallee (MDD02)Murray Darling Depression
 Rare   (IUCN: RA d(i,ii))   [edge of range]
Murray Lakes and Coorong (MDD03) 
 Near Threatened   [likes sand]
Lowan Mallee (MDD04) 
 Least Concern
Wimmera (MDD05) 
 Rare   (IUCN: RA d(ii))   [edge of range]
IBRA regions
DISPLAY ALL
4 of 4 subregionsNaracoorte Coastal PlainLeast Concern
, Rare
Fleurieu (KAN02)KanmantooNear Threatened
  [lots in Newland Head, Cox Scrub]
Mount Lofty Ranges (FLB01)Flinders Lofty BlockVulnerable
  (IUCN: VU B2ab(i,ii,iii); D2)   (Probable Decline)   [localised; limited habitat]
3 of 5 subregionsEyre Yorke BlockLeast Concern
, Rare
4 of 6 subregionsMurray Darling DepressionLeast Concern
, Near Threatened
, Rare
RSCA map:
Regional Species Conservation Assessments per IBRA subregion. Please click the thumbnail map.
AVH map:
Australian distribution map (external link)
SA Census:
Census of South Australian plants (external link)     [genus Allocasuarina]
Name derivation:
Allocasuarina from the Greek 'allos' meaning other or different, indicating the relationship with the genus Casuarina (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', later being latinised as Casuarius). Pusilla  from Latin meaning very small, may refer to the small habit of the plant.
Distribution:
Found across the southern part of South Australia, from Eyre Peninsula to the lower South-east, growing in heath on sandy soil. Also found in Victoria.
Status:
Native. Common in South Australia. Common in Victoria.
Plant description:
Dioecious shrub to 1 m high. Articles (stem segment) terete, smooth to 9 mm long and 1 mm diameter with 5-7 pale teeth (reduced leaves) around the end overlapping at their bases. Male spikes to 2 cm long, slender, with 9-10 whorls per cm. Female Flower red-brown to 1 mm long.
Fruit type:
Sub-globular or short-cylindrical woody cone to 1.5 cm long, with numerous valves.
Seed type:
Smooth semi-flat black seeds to 5 mm long, with a papery wing at one end.
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 paper bag and leave to dry for 2-3 weeks. This will allow the valves to dry and open, releasing the seeds. Then place the cones in a bucket and shake gently to dislodge the seeds. Use a sieve to separate seeds from 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 viability:
From one collection, the seed viability was average, at 65%.
Seed germination:
Seeds are non-dormant, viable seed should germinate readily.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
12000 (17.6 g)
12000 (17.6 g)
13-Oct-2005DJD144
Southern Lofty
28-Jul-200665%-18°C
Location: BGA — the seeds are stored at the Adelaide Botanic Gardens, MSB — the seeds are stored at the Millennium Seed Bank, Kew, England.
Number of plants: This is the number of plants from which the seeds were collected.
Collection location: The Herbarium of South Australia's region name.
% Viability: Percentage of filled healthy seeds determined by a cut test or x-ray.