Seeds of South Australia
Acacia aneura var. major (Leguminosae)
Large-fruit Mulga
List of species for Acacia
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Seed collecting:
October to November
Herbarium regions:
North Western, Nullarbor, Gairdner-Torrens, Eyre Peninsula, Murray
NRM regions:
Alinytjara Wilurara, Eyre Peninsula, South Australian Murray-Darling Basin
IBRA regions
Northern Flinders (FLB05)Flinders Lofty Block
 Least Concern   [taxonomic changes]
Gawler Volcanics (GAW02)Gawler
 Rare   (IUCN: RA d(ii))
Kingoonya (GAW05) 
 Least Concern   [some records may be new var argentia]
Roxby (GAW07) 
 Least Concern   [taxonomic changes - all varieties will become species]
Commonwealth Hill (GAW08) 
 Least Concern   [taxonomic changes - all varieties will become species]
Maralinga (GVD03)Great Victoria Desert
 Least Concern
Tallaringa (GVD05) 
 Least Concern   [taxonomic changes - all varieties will become species]
Yellabinna (GVD06) 
 Least Concern
Breakaways (STP01)Stony Plains
 Least Concern   [taxonomic changes - all varieties will become species]
Witjira (STP06) 
 Least Concern   [taxonomic changes - all varieties will become species]
Everard Block (CER03)Central Ranges
 Least Concern   [taxonomic changes - all varieties will become species]
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 arabica. Aneura from the Greek 'a' meaning not or without and 'neuron' meaning a nerve, referring to the obscure veins on the phyllodes. Major from the Latin 'magnus' meaning large, referring to the larger pod.
Distribution:
Scattered across the interior of South Australia. Found on deep loamy soils, often in situations where it has run-off water from adjacent hills. Also found in Western Australia, Northern Territory, Queensland and New South Wales.
Status:
Native. Common in South Australia. Common in the other states.
Plant description:
Tree to 14 m tall. Branchlets when young, densely pubescent, with hairs obscuring ribs. Leaves straight and flat to 8 cm long and 13mm wide, densely covered in hairs when young. Inflorescences axillary, solitary with long cylindrical yellow flower-heads. Distinguished from Acacia aneura var. aneura by their wide phyllodes and winged pods.
Fruit type:
Dark brown oblong pods to 5 cm long and 17 mm wide with wings to 2 mm wide or wider, densely pubescent when young, becoming glabrous.
Seed type:
Hard, dark brown, elliptical to ovoid seed to 6 mm long and 4 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 viability:
From one collection, the seed viability was high, at 80%.
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
BGA1525 (15 g)~1525-Oct-2004MOL 4598
Gairdner-Torrens
31-Mar-2006-18°C
BGA 
MSB
3700 (62.2 g)
5000 (87.4 g)
>3025-Oct-2004MOL 4611
Gairdner-Torrens
31-Mar-200680%-18°C
BGA4054 (40 g)~1025-Oct-2004MOL 4597
Gairdner-Torrens
31-Mar-2006-18°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.