Seeds of South Australia
Acacia anceps (Leguminosae)
Two Edged Wattle
List of species for Acacia
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Seed collecting:
November to January
Herbarium regions:
Nullarbor, Eyre Peninsula
NRM regions:
Alinytjara Wilurara, Eyre Peninsula
IBRA regions
Eyre Hills (EYB03)Eyre Yorke Block
 Least Concern
Talia (EYB04) 
 Least Concern
Yalata (NUL03)Nullarbor
 Least Concern
Hampton (HAM01)Hampton
 Least Concern   [undercollected]
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. Anceps from the Latin 'anceps' meaning two edged, referring to the flattened angled stems of the species.
Found scattered along coastal areas of South Australia from the Great Australian Bight to the tip of Yorke Peninsula. Grows in calcareous sand and shallow red-brown sand, in coastal dune vegetation or open scrub. Also found in Western Australia.
Native. Common in South Australia. Uncommon in Western Australia.
Plant description:
Erect, rigid, glabrous, spreading shrubs to 3 m high, the same or more across. Stems compressed or flattened and very acutely angled or winged.Phyllodes thick rigid, linear to obovate to 5cm long and 3.5 cm wide. Glands either basal, or near middle on upper margin of leaves. Inflorescences axillary, solitary with large globular, deep golden-yellow flower-head. Flowering between September and February.
Fruit type:
Red to brown, flat often undulating pod to 5 cm long and 12mm wide, straight or curved with wrinkled or prominent transverse lines and thick vein-like margins.
Seed type:
Dark brown, black or mottled elliptic seeds to 8 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 airtight 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)
of plants
Collection number
Collection location
% ViabilityStorage
11600 (288.5 g)
13625 (338 g)
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.