Seeds of South Australia
Allocasuarina muelleriana ssp. muelleriana (Casuarinaceae)
Slaty Oak-bush
List of species for Allocasuarina
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Seed collecting:
January to December
Herbarium regions:
Flinders Ranges, Eastern, 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
IBRA regions
SUMMARY
Bridgewater (NCP01)Naracoorte Coastal Plain
 Least Concern
Glenelg Plain (NCP02) 
 Rare   (IUCN: RA d(i,ii))   [edge of range]
Lucindale (NCP03) 
 Least Concern
Tintinara (NCP04) 
 Least Concern
Fleurieu (KAN02)Kanmantoo
 Least Concern
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Least Concern
Broughton (FLB02) 
 Rare   (IUCN: RA d(i,ii))   (Probable Decline)
Southern Flinders (FLB04) 
 Least Concern
Central Flinders (FLB06) 
 Rare   (IUCN: RA d(i,ii))   (Probable Decline)   [grazed]
Southern Yorke (EYB01)Eyre Yorke Block
 Near Threatened   (Probable Decline)
St Vincent (EYB02) 
 Rare   (IUCN: RA d(i,ii))   (Probable Decline)
Eyre Hills (EYB03) 
 Least Concern   [sandy soils]
Talia (EYB04) 
 Least Concern   [sandy soils]
Eyre Mallee (EYB05) 
 Least Concern   [sandy soils]
Murray Mallee (MDD02)Murray Darling Depression
 Least Concern
Murray Lakes and Coorong (MDD03) 
 Least Concern
Lowan Mallee (MDD04) 
 Least Concern
Wimmera (MDD05) 
 Rare   (IUCN: RA d(i,ii))   [edge of range]
Braemer (MDD07) 
 Rare   (IUCN: RA d(i,ii))   (Probable Decline)
Myall Plains (GAW01)Gawler
 Rare   (IUCN: RA d(ii))
Gawler Volcanics (GAW02) 
 Least Concern
Yellabinna (GVD06)Great Victoria Desert
 Least Concern
IBRA regions
DISPLAY ALL
4 of 4 subregionsNaracoorte Coastal PlainLeast Concern
, Rare
Fleurieu (KAN02)KanmantooLeast Concern
4 of 6 subregionsFlinders Lofty BlockLeast Concern
, Rare
5 of 5 subregionsEyre Yorke BlockLeast Concern
, Near Threatened
, Rare
5 of 6 subregionsMurray Darling DepressionLeast Concern
, Rare
2 of 8 subregionsGawlerLeast Concern
, Rare
Yellabinna (GVD06)Great Victoria DesertLeast Concern
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', latter being latinised as Casuarius). Muelleriana named after Baron Ferdinand von Muller (1825-1896), botanist, plant collector and Government Botanist of Victoria.
Distribution:
Found in the southern part of South Australia, except on Kangaroo Island, growing in scrub and heath on rocky siliceous soils. Also found in Victoria.
Status:
Native. Common in South Australia. Common in Victoria.
Plant description:
Dioecious or rarely monoecious shrub to 3 m high with smooth bark. Stem (looks like leaves) are ascending to 12 cm long with stem segments to 8 mm long and 0.8 mm diameter, usually angular, waxy, margins adjacent to furrows often raised (when dry), with 5 or 6 teeth (reduced leaves) to 0.5 mm long at segment junction. Male spikes resemble a necklace of beads, orange-brown. Female flowers singular, red. Cones on peduncle to 8 mm long with cone body to 28 mm long and 12 mm diameter. This subspecies differ from the other two subspecies found in South Australia which have thicker stems (0.7–1.1 mm diam.), flat rib margins and usually larger cones. Allocasuarina muelleria ssp. alticola is endemic to the northern Flinders Ranges, have cones which are sessile or on a short peduncle to 3 mm long and 2.5 mm diameter, whereas A. muelleria ssp. notocolpica is endemic to Kangaroo Island and have cones with peduncles to 17 mm and 4.5 mm thick. Flowers throughout the year.
Fruit type:
Greyish-brown woody cylindrical cone with several rows of valves hardly protruding far from cone body.
Seed type:
Reddish brown, smooth and semi-flat seed to 9 mm long and 5 mm wide including the short 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 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 viability:
From two collections, the seed viability were low to average, ranging from 35% to 75%.
Seed germination:
Seeds are non-dormant, viable seed should germinate readily.
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', latter being latinised as Casuarius).