Seeds of South Australia
Acacia myrtifolia (Leguminosae)
Myrtle Wattle
List of species for Acacia
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Seed collecting:
October to December
Herbarium regions:
Eyre Peninsula, Northern Lofty, Murray, Yorke Peninsula, Southern Lofty, Kangaroo Island, South Eastern
NRM regions:
Adelaide and Mount Lofty Ranges, Eyre Peninsula, Kangaroo Island, Northern and Yorke, South Australian Murray-Darling Basin, South East
IBRA regions
SUMMARY
Mount Gambier (SVP02)Southern Volcanic Plain
 Least Concern   [good seeder, needs fire]
Bridgewater (NCP01)Naracoorte Coastal Plain
 Least Concern   [good seeder, needs fire]
Glenelg Plain (NCP02) 
 Least Concern   [good seeder, needs fire]
Lucindale (NCP03) 
 Least Concern   [good seeder, needs fire]
Tintinara (NCP04) 
 Least Concern   [good seeder, needs fire]
Kangaroo Island (KAN01)Kanmantoo
 Least Concern   [could be different form on KI]
Fleurieu (KAN02) 
 Least Concern
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Least Concern
Broughton (FLB02) 
 Critically Endangered   (IUCN: CR D)   (Definite Decline)   [no databased records, DD]
Southern Yorke (EYB01)Eyre Yorke Block
 Rare   (IUCN: RA d(ii))   [likes fire, isolated pop.]
Eyre Hills (EYB03) 
 Rare   (IUCN: RA d(i,ii))   [highly localised]
Talia (EYB04) 
 Rare   (IUCN: RA d(i,ii))   [highly localised]
Murray Lakes and Coorong (MDD03)Murray Darling Depression
 Least Concern   [good seeder, needs fire]
Lowan Mallee (MDD04) 
 Near Threatened   [edge of range; needs fire; should be more records]
Wimmera (MDD05) 
 Rare   (IUCN: RA d(i,ii))   [not typical habitat, needs rainfall, data included in NC species]
IBRA regions
DISPLAY ALL
Mount Gambier (SVP02)Southern Volcanic PlainLeast Concern
  [good seeder, needs fire]
4 of 4 subregionsNaracoorte Coastal PlainLeast Concern
2 of 2 subregionsKanmantooLeast Concern
2 of 6 subregionsFlinders Lofty BlockLeast Concern
, Critically Endangered
3 of 5 subregionsEyre Yorke BlockRare
3 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 Acacia]
Name derivation:
Acacia from the Greek 'akakia' and derived from 'ake' or 'akis' meaning a sharp point or thorn and 'akazo' meaning to sharpen. Dioscorides, the Greek physician and botanist used the word in the 1st century AD for the Egyptian thorn tree, Acacia arabicaMyrtifolia from the Latin 'myrtus' meaning myrtle and 'folius' meaning leaves, having leaves like the Myrtle genus.
Distribution:
Found in the southern part of South Australia, growing in a variety of vegetation communities from open forest, woodland to open scrub. Also found in Western Australia, Queensland, New South Wales, Victoria and Tasmania.
Status:
Native. Common in South Australia. Common in the other States.
Plant description:
Bushy shrub to 3 m high with red, angled and prominently ribbed branchlets. Leaves erect, narrowly elliptic to oblanceolate to 130 mm long and 30 mm wide, asymmetric, usually thick, green and smooth; midrib and marginal veins prominent. Flower-spike axillary racemes with large, globular, creamy-yellow flower-heads. Flowering between July and October.
Fruit type:
Light brown linear pod to 90 mm long and 5 mm wide; curved, marginal vein thick and undulating.
Seed type:
Hard brown oblong seed to 4 mm long and 2 mm wide
Embryo type:
Investing.
Seed collecting:
Collect mature pods that are turning brown, with hard, dark seeds inside.
Seed cleaning:
Place the pods in a tray and leave to dry for 1-2 weeks or until the pods begin to split. Then rub the dried pods to dislodge the seeds. Use a sieve to separate any 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:
This species has physical dormancy that needs to be overcome for the seed to germinate (e.g. nicking or softening the seed coat).