Seeds of South Australia
Acacia gillii (Leguminosae)
Gill's Wattle
List of species for Acacia
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Seed collecting:
October to December
Herbarium region:
Eyre Peninsula
NRM region:
Eyre Peninsula
IBRA region
Eyre Hills (EYB03)Eyre Yorke Block
 Least Concern
Talia (EYB04) 
 Rare   (IUCN: RA d(i,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 arabica. Gillii commemorates Mr. Walter Gill (1851-1929) a former Conservator of Forests in South Australia and also Mr. Thomas Gill (1849-1923), Under Treasurer in 1894.
Endemic to South Australia and restricted to the southern  Eyre Peninsula, in the Port Lincoln and Marble Range area. Occurs in undulating open mallee scrub in red shallow porous loam.
Native. Uncommon in South Australia.
Plant description:
Slender, straggly, wiry, open shrubs or small trees to 4 m high, with pendulous branches, slender trunk and smooth grey-brown bark. Branches reddish, angular, flexuous, often in a regular zig-zag line. Leaves linear, oblanceolate to 15 cm long and 12 mm wide, flat, generally spreading but sometimes reflexed, glabrous with prominent mid-vein, tapered towards the base into a somewhat twisted wrinkled pulvinus. Small glands near the base. Inflorescences axillary, solitary or in flexuose racemes owing to the reduction of phyllodes, with globular, golden yellow flower-heads. Flowers at  irregular periods throughout the year.
Fruit type:
Long, brown, linear pod to 17 cm long and 6 mm wide, usually slightly curved, flattish but raised over the seeds. Margins vein-like, slightly constricted between the seeds.
Seed type:
Hard black ellipsoid to ovoid seeds to 6 mm long and 3 mm wide.
Embryo type:
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 75%.
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)
of plants
Collection number
Collection location
% ViabilityStorage
5111 (102.21 g)
5375 (107.5 g)
>8010-Nov-2004MKJ 47
Eyre Peninsula
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.