Seeds of South Australia
Maireana georgei (Chenopodiaceae)
Slit-wing Bluebush
List of species for Maireana
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Seed collecting:
September to November
Herbarium regions:
North Western, Lake Eyre, Nullarbor, Gairdner-Torrens, Flinders Ranges, Eastern, Eyre Peninsula, Northern Lofty, Murray
NRM regions:
Eyre Peninsula, South Australian Arid Lands, South Australian Murray-Darling Basin
IBRA regions
SUMMARY
Broughton (FLB02)Flinders Lofty Block
 Least Concern   (Probable Decline)
Olary Spur (FLB03) 
 Least Concern
Southern Flinders (FLB04) 
 Least Concern   (Probable Decline)
Northern Flinders (FLB05) 
 Least Concern
Central Flinders (FLB06) 
 Least Concern
Eyre Hills (EYB03)Eyre Yorke Block
 Near Threatened
Eyre Mallee (EYB05) 
 Near Threatened
South Olary Plain (MDD01)Murray Darling Depression
 Least Concern   [grazed]
Murray Mallee (MDD02) 
 Rare   (IUCN: RA d(ii))   [grazed; southern limit]
Braemer (MDD07) 
 Least Concern
Murray Scroll Belt (RIV06)Riverina
 Rare   (IUCN: RA d(ii))   [grazed]
Myall Plains (GAW01)Gawler
 Least Concern   [could be increasing]
Gawler Volcanics (GAW02) 
 Least Concern
Gawler Lakes (GAW03) 
 Least Concern
Arcoona Plateau (GAW04) 
 Least Concern
Kingoonya (GAW05) 
 Least Concern
Torrens (GAW06) 
 Least Concern
Roxby (GAW07) 
 Least Concern
Commonwealth Hill (GAW08) 
 Least Concern
Maralinga (GVD03)Great Victoria Desert
 Least Concern
Kintore (GVD04) 
 Near Threatened
Tallaringa (GVD05) 
 Least Concern
Yellabinna (GVD06) 
 Least Concern
Nullarbor Plain (NUL02)Nullarbor
 Least Concern
Yalata (NUL03) 
 Least Concern
Barrier Range (BHC01)Broken Hill Complex
 Least Concern
Bimbowrie (BHC05) 
 Least Concern
Curnamona (BHC06) 
 Least Concern
Simpson Desert (SSD02)Simpson Strzelecki Dunefields
 Least Concern
Dieri (SSD03) 
 Least Concern
Warriner (SSD04) 
 Least Concern
Strzelecki Desert (SSD05) 
 Least Concern
Breakaways (STP01)Stony Plains
 Least Concern
Oodnadatta (STP02) 
 Least Concern
Murnpeowie (STP03) 
 Least Concern
Peake-Dennison Inlier (STP04) 
 Least Concern
Macumba (STP05) 
 Least Concern
Witjira (STP06) 
 Least Concern
Baltana (STP07) 
 Least Concern
Sturt Stony Desert (CHC02)Channel Country
 Least Concern
Coongie (CHC06) 
 Least Concern
Lake Pure (CHC07) 
 Least Concern
Mann-Musgrave Block (CER01)Central Ranges
 Near Threatened
Everard Block (CER03) 
 Least Concern
Tieyon (FIN03)Finke
 Least Concern
Pedirka (FIN04) 
 Least Concern
IBRA regions
DISPLAY ALL
5 of 6 subregionsFlinders Lofty BlockLeast Concern
2 of 5 subregionsEyre Yorke BlockNear Threatened
3 of 6 subregionsMurray Darling DepressionLeast Concern
, Rare
Murray Scroll Belt (RIV06)RiverinaRare
  (IUCN: RA d(ii))   [grazed]
8 of 8 subregionsGawlerLeast Concern
4 of 4 subregionsGreat Victoria DesertLeast Concern
, Near Threatened
2 of 3 subregionsNullarborLeast Concern
3 of 4 subregionsBroken Hill ComplexLeast Concern
4 of 4 subregionsSimpson Strzelecki DunefieldsLeast Concern
7 of 7 subregionsStony PlainsLeast Concern
3 of 4 subregionsChannel CountryLeast Concern
2 of 3 subregionsCentral RangesLeast Concern
, Near Threatened
2 of 2 subregionsFinkeLeast Concern
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 Maireana]
SA Flora:
Flora of South Australia Edition 5
Name derivation:
'Maireana' after the 19th century Belgium botanist Adolphe Lemaire; 'georgei' after W.J George who collected the type specimen from Victoria in 1902.
Distribution:
Found in a range of vegetation types, sometimes found growing near salt lakes. Found across mainland South Australia, excluding coastal areas.
Status:
Native, common in South Australia, common in all mainland states apart from Victoria.
Plant description:
Compact rounded shrub to 50 cm high; branches closely woolly. Leaves alternate, slender and semiterete, 8-15 rarely to 30 mm long, fleshy, sparsely to densely silky or almost glabrous. Flowers solitary, bisexual. Flowering all year round.
Fruit type:
Fruiting perianth glabrous except for the lobes; tube thick-walled, 6 mm high; horizontal wing 15–20 mm diam., faintly veined with a radial slit.
Seed type:
Ellipsoid to circular, convex, brown seed.
Embryo type:
Peripheral
Seed collecting:
Collect dry, papery fruits. Check that they contain well developed seeds before making a collection. Shake or strip fruits into a vessel.
Seed cleaning:
Remove twigs and other plant material.
Seed viability:
High seed viability, 80% and 90% from 2 collections.
Seed germination:
Seeds are non-dormant, high levels of germination were observed with no treatment
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
12783 (191.75 g)
13271 (188.6 g)
>15026-Oct-2004MOL 4621
Gairdner-Torrens
28-Mar-2006100%-18°C
BGA1000 (19 g)26-Sep-2008DJD1212
Lake Eyre
20-Jul-200990%-18°C
BGA2570 (34.5 g)12-Dec-2012DJD2403
Murray
27-Feb-201480%-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
Jun-1388%4 d11 d
1% agar;
Incubated under spring/autumn conditions
Jun-1374%4 d11 d
1% agar with 250 mg/L gibberellic acid (pH 6.5);
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)