Seeds of South Australia
Acacia spinescens (Leguminosae)
Spiny Wattle
List of species for Acacia
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Seed collecting:
October to December
Herbarium regions:
Flinders Ranges, Eyre Peninsula, Northern Lofty, Murray, Yorke Peninsula, Southern Lofty, Kangaroo Island, South Eastern
NRM regions:
Adelaide and Mount Lofty Ranges, Kangaroo Island, Northern and Yorke, South Australian Arid Lands, South Australian Murray-Darling Basin, South East
IBRA regions
SUMMARY
Bridgewater (NCP01)Naracoorte Coastal Plain
 Least Concern   [edge of range]
Lucindale (NCP03) 
 Least Concern
Tintinara (NCP04) 
 Least Concern
Kangaroo Island (KAN01)Kanmantoo
 Least Concern
Fleurieu (KAN02) 
 Least Concern
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Least Concern
Broughton (FLB02) 
 Least Concern   [Edge of range]
Southern Flinders (FLB04) 
 Data Deficient   [Needs more surveys]
Southern Yorke (EYB01)Eyre Yorke Block
 Least Concern
St Vincent (EYB02) 
 Least Concern   (Probable Decline)
Eyre Hills (EYB03) 
 Least Concern
Talia (EYB04) 
 Least Concern
Eyre Mallee (EYB05) 
 Least Concern
Murray Mallee (MDD02)Murray Darling Depression
 Least Concern
Murray Lakes and Coorong (MDD03) 
 Least Concern
Lowan Mallee (MDD04) 
 Least Concern
Wimmera (MDD05) 
 Least Concern
Murray Scroll Belt (RIV06)Riverina
 Regionally Extinct   [probably extinct- 1 old record]
Myall Plains (GAW01)Gawler
 Rare   (IUCN: RA d(ii))
Gawler Volcanics (GAW02) 
 Rare   (IUCN: RA d(ii))
Yellabinna (GVD06)Great Victoria Desert
 Rare   (IUCN: RA d(ii))
IBRA regions
DISPLAY ALL
3 of 4 subregionsNaracoorte Coastal PlainLeast Concern
2 of 2 subregionsKanmantooLeast Concern
3 of 6 subregionsFlinders Lofty BlockLeast Concern
, Data Deficient
5 of 5 subregionsEyre Yorke BlockLeast Concern
4 of 6 subregionsMurray Darling DepressionLeast Concern
Murray Scroll Belt (RIV06)RiverinaRegionally Extinct
  [probably extinct- 1 old record]
2 of 8 subregionsGawlerRare
Yellabinna (GVD06)Great Victoria DesertRare
  (IUCN: RA d(ii))
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 arabicaSpinescens from the Latin 'spina' meaning thorn, spine and '-escens' meaning beginning; refers to the branches ending in a spine or sharp point.
Distribution:
Found in the southern part of South Australia growing in a variety of soil types and vegetation associations. Also found in Victoria.
Status:
Native. Common in South Australia. Common in Victoria.
Plant description:
Much-branched, erect shrub to 1 m high. Branchlets rigid, terete, spiny, green with prominent yellow rib striations. Leaves usually absent, very rarely a few persistent at base of main stems. Linear to oblong, to 50 mm long and 3 mm wide; thick with tip curved or hooked, midvein prominent.  Flower-spike solitary with stalkless bright yellow, globular flower-heads. Flowering between July and October.
Fruit type:
Dark brown linear glabrous. pod to 30 mm long and 3.5 mm wide, curved and becoming twisted.
Seed type:
Hard, dark brown ovoid seed to 3.5 mm long and 2.5 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).
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA290 (1.706 g)105-Jan-2006Cox Scrub
Southern Lofty
9-Aug-2006banked-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.