Seeds of South Australia
Acacia quornensis (Leguminosae)
Quorn Wattle
List of species for Acacia
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Seed collecting:
November to January
Herbarium regions:
Flinders Ranges, Eyre Peninsula
NRM regions:
Eyre Peninsula, South Australian Arid Lands
IBRA region
Southern Flinders (FLB04)Flinders Lofty Block
 Rare   (IUCN: RA d(i,ii))   [Finely defined species. Very restricted. Hawker records likely A. spooneri.]
Central Flinders (FLB06) 
 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. Quornensis refer to the location of the type specimen, a hill near Quorn in the Flinders Ranges.
Distribution:
Endemic to South Australia and restricted to two locations in the Flinders Ranges around Quorn and Hawker, growing in low woodland vegetation associated with Callitris, along rocky creeks or on to the lower slopes of the ranges in shallow calcareous loamy soil.
Status:
Native. Locally common but rare in South Australia.
Plant description:
Erect, glaucous, spreading bushy shrubs to 3 m high. Branch slightly angled but soon becoming almost terete with thin, greyish bark on mature stems and trunk. Leaves lanceolate to 5 cm long and 8 mm wide; straight or slightly curved, flat, glabrous, pale green with vein-like pale yellow margins and small glands on upper margin near the base. Inflorescences in axillary racemes with globular, yellow flower-heads. Flowering between September and November.
Fruit type:
Light brown, oblong pod to 12 cm long and 10 mm wide, flat but raised over the seeds, with thick margins slightly constricted between the seeds.
Seed type:
Hard, black semi-flat 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 average at 60%.
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
1800 (27.98 g)
1800 (27.98 g)
5-Dec-2005TEE003
Eyre Peninsula
1-Aug-200660%-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.