Seeds of South Australia
Callistemon rugulosus (Myrtaceae)
Scarlet Bottlebrush
List of species for Callistemon
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Seed collecting:
January to December
Herbarium regions:
Flinders Ranges, Eyre Peninsula, Northern Lofty, Murray, Yorke Peninsula, Southern Lofty, Kangaroo Island, South Eastern
NRM regions:
Adelaide and Mount Lofty Ranges, Eyre Peninsula, Kangaroo Island, Northern and Yorke, South Australian Arid Lands, South Australian Murray-Darling Basin, South East
IBRA regions
SUMMARY
Glenelg Plain (NCP02)Naracoorte Coastal Plain
 Rare   (IUCN: RA d(i,ii))   [(no records)]
Lucindale (NCP03) 
 Least Concern   [should be more records due to taxo changes]
Tintinara (NCP04) 
 Least Concern   [missing records]
Kangaroo Island (KAN01)Kanmantoo
 Near Threatened   [reasonably widespread and stable]
Fleurieu (KAN02) 
 Rare   (IUCN: RA d(ii))   [specialised habitat; sensitive to climate change & quality/quantity of water]
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Rare   (IUCN: RA d(ii))   (Probable Decline)   [specialised habitat; sensitive to climate change & quality/quantity of water]
Broughton (FLB02) 
 Endangered   (IUCN: EN D)   (Probable Decline)
Southern Flinders (FLB04) 
 Least Concern
Southern Yorke (EYB01)Eyre Yorke Block
 Vulnerable   (IUCN: VU B2ab(iii))   (Probable Decline)
Eyre Hills (EYB03) 
 Near Threatened   (Probable Decline)
Talia (EYB04) 
 Rare   (IUCN: RA d(ii))   (Probable Decline)
Eyre Mallee (EYB05) 
 Rare   (IUCN: RA d(ii))   (Probable Decline)
Murray Mallee (MDD02)Murray Darling Depression
 Rare   (IUCN: RA d(i,ii))   (Probable Decline)   [needs surface water - threatened by drought]
Murray Lakes and Coorong (MDD03) 
 Vulnerable   (IUCN: VU B2ab(i,ii,iii))   (Definite Decline)   [lack of habitat]
Lowan Mallee (MDD04) 
 Rare   (IUCN: RA d(i,ii))   (Probable Decline)   [needs surface water - threatened by drought]
Wimmera (MDD05) 
 Least Concern   [missing records]
IBRA regions
DISPLAY ALL
3 of 4 subregionsNaracoorte Coastal PlainLeast Concern
, Rare
2 of 2 subregionsKanmantooNear Threatened
, Rare
3 of 6 subregionsFlinders Lofty BlockLeast Concern
, Rare
, Endangered
4 of 5 subregionsEyre Yorke BlockNear Threatened
, Rare
, Vulnerable
4 of 6 subregionsMurray Darling DepressionLeast Concern
, Rare
, Vulnerable
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 Callistemon]
Name derivation:
Callistemon from the Greek 'kallos' meaning beauty and 'stemon' meaning a stamen; alluding to the beautiful flowers of the genus. Rugulosus  from the Latin 'ruga' meaning crease or wrinkle but the reason for this naming is unclear.
Distribution:
Found in the southern part of South Australia, growing in mallee scrubs and low open woodland in sandy depressions and near watercourses in soils that are seasonally moist. Also found in Victoria.
Status:
Native. Common in South Australia. Common in Victoria.
Plant description:
Straggling shrub to 4 m tall with peeling grey bark and stiff branches. Leaves thick and rigid, narrow-oblanceolate, sharply pointed, to 50 mm long and 7 mm wide, margins occasionally incurved, Inflorescence a cylindrical spike to 80 mm long and 50 mm wide with rosy-red stamens and yellow anthers flowers imparting a golden-speckled appearance. Flowering between November and February.
Fruit type:
Grey-brown woody capsules to 8 mm long and 9 mm wide, valves constricted. Capsules remain on the branches.
Seed type:
Tiny brown rectangular seed to 1.5 mm long and 0.5 mm wide.
Embryo type:
Folded.
Seed collecting:
Collect capsules that are large and hard with closed valves, preferably collect from older, woody capsules.
Seed cleaning:
Place the capsules in a tray and leave to dry for at least two weeks or until all the valves are open. Then place all the capsules into a bucket with a lid if possible and shake hard to dislodge the seeds from the capsules. Use a sieve to separate the seeds from the capsules. The fine material will contain the seeds and other flowering material. It is very difficult to separate the seeds from this other material as the size, shape and weight are very similar. However the seeds will be a darker brown and more fleshy looking. 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:
Seeds are non-dormant, viable seed should germinate readily.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
3650000
3650000
3216-Oct-2003PJA 36
Kangaroo Island
1-Sep-2004100%+5°C, -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.