Seed collecting: | December to February | Herbarium regions: | North Western, Lake Eyre, Gairdner-Torrens, Eastern |
NRM regions: | Alinytjara Wilurara, Eyre Peninsula, South Australian Arid Lands |
Olary Spur (FLB03) | Flinders Lofty Block | Least Concern (Probable Decline) [disjunct, edge of range, needs to be revisited, threatened by grazing] | Northern Flinders (FLB05) | Data Deficient [imprecise location] |
Kingoonya (GAW05) | Gawler | Rare (IUCN: RA d(ii)) |
Maralinga (GVD03) | Great Victoria Desert | Least Concern | Kintore (GVD04) | Least Concern | Tallaringa (GVD05) | Least Concern | Yellabinna (GVD06) | Rare (IUCN: RA d(ii)) |
Simpson Desert (SSD02) | Simpson Strzelecki Dunefields | Least Concern | Dieri (SSD03) | Least Concern | Strzelecki Desert (SSD05) | Least Concern |
Breakaways (STP01) | Stony Plains | Rare (IUCN: RA d(ii)) | Oodnadatta (STP02) | Rare (IUCN: RA d(ii)) | Murnpeowie (STP03) | Rare (IUCN: RA d(ii)) | Macumba (STP05) | Least Concern | Witjira (STP06) | Least Concern |
Sturt Stony Desert (CHC02) | Channel Country | Least Concern | Diamantina-Eyre (CHC04) | Rare (IUCN: RA d(ii)) | Coongie (CHC06) | Least Concern | Lake Pure (CHC07) | Least Concern |
Mann-Musgrave Block (CER01) | Central Ranges | Least Concern | Watarru (CER02) | Near Threatened | Everard Block (CER03) | Least Concern |
Tieyon (FIN03) | Finke | Least Concern | Pedirka (FIN04) | Near Threatened |
2 of 6 subregions | Flinders Lofty Block | Least Concern , Data Deficient |
Kingoonya (GAW05) | Gawler | Rare (IUCN: RA d(ii)) |
4 of 4 subregions | Great Victoria Desert | Least Concern , Rare |
3 of 4 subregions | Simpson Strzelecki Dunefields | Least Concern |
5 of 7 subregions | Stony Plains | Least Concern , Rare |
4 of 4 subregions | Channel Country | Least Concern , Rare |
3 of 3 subregions | Central Ranges | Least Concern , Near Threatened |
2 of 2 subregions | Finke | Least Concern , Near Threatened |
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:
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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. Murrayana named in honour of Dr. James Patrick Murray, a surgeon and plant collector to the Howitt's Expedition in search of Burke and Wills. |
Distribution:
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Found scattered throughout the northern part of South Australia, with one disjunct population near Yunta. Grows in hummock grassland to low woodland and tall shrubland, usually in red or yellow deep sands, on or between sand ridges or along sandy creek banks and floodout areas. Also found in Western Australia, Northern territory, Queensland and New South Wales. |
Status:
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Native. Common in South Australia. Common in the other States. |
Plant description:
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Erect, bushy shrubs or small trees to 5 m high, crown spreading, usually dividing into a few main stems near ground level, with branchlets slightly angular becoming terete; greenish-yellow to reddish-brown, often pruinose. Leaves variable, linear-oblong to linear-lanceolate, to 18 cm long and 7 mm wide; straight, curved or falcate, flat, pale-green to glaucous with mid-vein prominent; margins yellowish vein-like, lateral veins rather obscure; apex obtuse but with a small recurved point; a small gland below the point, a second rather obscure gland at the base of phyllode just above the short wrinkled pulvinus. Flower-spike in axillary glabrous racemes shorter than phyllodes usually consisting of 3-7 globular, bright yellow flower-heads. Flowering between August and October. |
Fruit type:
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Brown, narrowly oblong pod to 7 cm long and 10 mm wide, flat but raised over the seeds showing their outline; margins straight or slightly constricted. |
Seed type:
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Hard black ovoid seed to 5 mm along and 4 mm wide with a short rounded red aril. |
Embryo type:
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Investing. |
Seed collecting:
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Collect mature pods that are turning brown, with hard, dark seeds inside. |
Seed cleaning:
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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:
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This species has physical dormancy that needs to be overcome for the seed to germinate (e.g. nicking or softening the seed coat). |
Location | No. of seeds (weight grams) | Number of plants | Date collected | Collection number Collection location | Date stored | % Viability | Storage temperature |
---|---|---|---|---|---|---|---|
BGA MSB | 8173 8173 | 50 | 1-Dec-2003 | PJA 50 North Western | 1-Sep-2004 | 60% | +5°C, -18°C |
Date | Result | T0 | T50 | Pre-treatment | Germination medium | Incubator: Photoperiod / Thermoperiod |
Mar-04 | 85% | 8 d | 12 d | seed coat nicked with scalpel; 1% agar; 8/16; / 20°C |