Seeds of South Australia
Acacia beckleri ssp. beckleri (Leguminosae)
Barrier Range Wattle
List of species for Acacia
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Seed collecting:
October to January
Herbarium regions:
Gairdner-Torrens, Flinders Ranges, Eastern, Eyre Peninsula, Murray
NRM regions:
South Australian Arid Lands, South Australian Murray-Darling Basin
IBRA regions
Eyre Hills (EYB03)Eyre Yorke Block
 Rare   (IUCN: RA d(ii))   [not well protected in reserves, used to be A beckleri]
Talia (EYB04) 
 Rare   (IUCN: RA d(ii))   [not well protected in reserves, used to be A beckleri]
Eyre Mallee (EYB05) 
 Rare   (IUCN: RA d(ii))   [not well protected in reserves, used to be A beckleri]
Myall Plains (GAW01)Gawler
 Rare   (IUCN: RA d(ii))   [not well protected in reserves, used to be A beckleri]
Gawler Volcanics (GAW02) 
 Least Concern   [not well protected in reserves, used to be A beckleri]
Gawler Lakes (GAW03) 
 Rare   (IUCN: RA d(ii))   [not well protected in reserves, used to be A beckleri]
Arcoona Plateau (GAW04) 
 Rare   (IUCN: RA d(ii))   [not well protected in reserves, used to be A beckleri]
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. Beckleri named for Hermann Beckler, early 20th century German-born doctor and botanist who accompanied the Victorian Exploring Expedition including the Burke and Wills Expedition.
Distribution:
Found on Eyre Peninsula (mainly Gawler Ranges area) and Flinders Ranges to Boolcoomata in the Eastern region, growing mainly on stony hillsides associated with tall or low shrubland vegetation, in mainly shallow compact loamy soil. Also found in New South Wales.
Status:
Native. Common in South Australia. Common in New South Wales.
Plant description:
Straggly or erect, compact, bushy shrubs to 3 m high, often with a spread greater than its height and branching near ground level. Stem smooth, reddish-brown and slightly glaucous. Leaves thick, narrow-elliptic to 17 cm long and 22 mm wide, straight or falcate.  Inflorescences axillary racemes much shorter than leaves with  large, globular, deep yellow flower-heads. Flowering between July and October.
Fruit type:
Dark brown broad and flat pods to 11 cm long and 6 mm wide, raised over the seeds. Margins thickened, slightly constricted between the seeds.
Seed type:
Hard, black oblong to elliptical seed to 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 viability:
From two collections, the seed viability were high, at 80% and 100%.
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
BGA 
MSB
3200 (43 g)
3200 (43 g)
30-407-Dec-2005DJD296
Eyre Peninsula
1-Aug-200680%-18°C
BGA 
MSB
2900 (54.23 g)
2900 (54.23 g)
302-Nov-2009TST852
Eyre Peninsula
Jun-2010100%-18°C
BGA871 (8.4 g)729-Nov-2013KHB723
Flinders Ranges
24-Mar-201585%-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.
Germination table:
DateResultT0T50Pre-treatment | Germination medium | Incubator: Photoperiod / Thermoperiod
July 2014100%10d10d Seed coat nicked
1% water agar
Incubated under spring/autumn conditions
Result: Maximum percentage of germination observed.
T0: Number of days before first germinant observed.
T50: Number of days to achieve 50% germination.
Pre-treatment: The initial treatment that the seeds received prior to placement on germination media.
Germination medium: The substrate that seeds were placed on for the duration of the germination experiment.
Incubator conditions:
Photoperiod: The duration of light exposure that the seeds were subject to during a 24 hour period.
Thermoperiod: The constant or diurnal temperatures that seeds were subject to during a 24 hour period.
Winter conditions: 15°C 20 h (3am→11pm); 5°C 4 h (11pm→3am) / 10 h light (8am→6pm); 14 h dark (6pm→8am)
Spring/Autumn conditions: 22°C 12 h (8am→8pm); 10°C 12 h (8pm→8am) / 12 h light (8am→8pm); 12 h dark (8pm→8am)
Summer conditions: 30°C 14 h (6am→8pm); 15°C 10 h (8pm→6am) / 14 h light (6am→8pm); 10 h dark (8pm→6am)