Seeds of South Australia
Acacia rupicola (Leguminosae)
Rock Wattle
List of species for Acacia
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Seed collecting:
October to December
Herbarium regions:
Flinders Ranges, Eyre Peninsula, Northern Lofty, Murray, Yorke Peninsula, Southern Lofty, South Eastern
NRM regions:
Adelaide and Mount Lofty Ranges, Eyre Peninsula, Northern and Yorke, South Australian Murray-Darling Basin, South East
IBRA regions
SUMMARY
Lucindale (NCP03)Naracoorte Coastal Plain
 Rare   (IUCN: RA d(ii))   [locally common]
Tintinara (NCP04) 
 Least Concern
Kangaroo Island (KAN01)Kanmantoo
 Rare   (IUCN: RA d(ii))
Fleurieu (KAN02) 
 Rare   (IUCN: RA d(ii))
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Rare   (IUCN: RA d(ii))
Broughton (FLB02) 
 Data Deficient
Southern Flinders (FLB04) 
 Least Concern   [Likes fire. Rocky hilltops]
Southern Yorke (EYB01)Eyre Yorke Block
 Least Concern
Eyre Hills (EYB03) 
 Least Concern
Talia (EYB04) 
 Least Concern
Eyre Mallee (EYB05) 
 Least Concern
Murray Mallee (MDD02)Murray Darling Depression
 Rare   (IUCN: RA d(i,ii))   [limited extent]
Lowan Mallee (MDD04) 
 Rare   (IUCN: RA d(i,ii))   [edge of range]
Wimmera (MDD05) 
 Vulnerable   (IUCN: VU B2ab(i,ii); D2)   (Probable Decline)
Gawler Volcanics (GAW02)Gawler
 Rare   (IUCN: RA d(i,ii))
IBRA regions
DISPLAY ALL
2 of 4 subregionsNaracoorte Coastal PlainLeast Concern
, Rare
2 of 2 subregionsKanmantooRare
3 of 6 subregionsFlinders Lofty BlockLeast Concern
, Rare
, Data Deficient
4 of 5 subregionsEyre Yorke BlockLeast Concern
3 of 6 subregionsMurray Darling DepressionRare
, Vulnerable
Gawler Volcanics (GAW02)GawlerRare
  (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. Rupicola from the Latin 'rupes' meaning rock and 'colo' meaning to inhabit, referring to the rocky habitat where the species is found.
Distribution:
Found on southern Eyre Peninsula, Flinders Ranges, southern Yorke Peninsula, Mount Lofty Ranges, Kangaroo Island, Murray (Monarto area) and the upper South-east, growing in rocky areas in woodland and forest, or in open scrub in near coastal areas associated with sandy, alkaline yellow duplex, calcareous sands and hard alkaline red duplex soils. Also found in Victoria.
Status:
Native. Common in South Australia. Common in Victoria
Plant description:
Erect, glabrous, rigid, prickly, somewhat diffuse viscid shrubs to 2.5 m high with a resinous odour. Leaves linear-lanceolate to narrowly triangular, broad and swollen at the base to 2.5 cm long and 2.5 mm wide. Inflorescences simple and axillary, solitary with globular, creamy yellow flower-heads. Flowering between August and November.
Fruit type:
Long,brown curved pod to 7 cm long and 5 mm wide.
Seed type:
Dark brown to black, oblong to elliptic seeds to 8 mm long and 4 mm wide.
Embryo type:
Investing.
Seed collecting:
Collect mature pods that are turning brown, with hard, dark seeds inside. Be careful when collecting the pods, as plants are very prickly.
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 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
3600 (75.74 g)
3809 (80 g)
>6010-Nov-2004MKJ 48
Eyre Peninsula
31-Mar-2006100%-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.