Seeds of South Australia
Maireana triptera (Chenopodiaceae)
Three-wing Bluebush
List of species for Maireana
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Herbarium regions:
North Western, Lake Eyre, Gairdner-Torrens, Flinders Ranges, Eastern, Eyre Peninsula, Murray
NRM regions:
Alinytjara Wilurara, Eyre Peninsula, South Australian Arid Lands, South Australian Murray-Darling Basin
IBRA regions
SUMMARY
Olary Spur (FLB03)Flinders Lofty Block
 Data Deficient
Northern Flinders (FLB05) 
 Least Concern
Central Flinders (FLB06) 
 Rare   (IUCN: RA d(ii))   (Probable Decline)   [edge of range, grazed]
South Olary Plain (MDD01)Murray Darling Depression
 Least Concern   [prefers red, stony soils]
Murray Mallee (MDD02) 
 Rare   (IUCN: RA d(i,ii))   [Bob C - keep record, widespread spp]
Braemer (MDD07) 
 Data Deficient
Myall Plains (GAW01)Gawler
 Least Concern   [increases in mallee after fire]
Gawler Volcanics (GAW02) 
 Least Concern   [increases in mallee after fire]
Gawler Lakes (GAW03) 
 Least Concern   [increases in mallee after fire]
Kingoonya (GAW05) 
 Least Concern   [increases in mallee after fire]
Roxby (GAW07) 
 Least Concern
Commonwealth Hill (GAW08) 
 Least Concern
Maralinga (GVD03)Great Victoria Desert
 Least Concern   [increases in mallee after fire]
Kintore (GVD04) 
 Near Threatened
Tallaringa (GVD05) 
 Near Threatened
Yellabinna (GVD06) 
 Near Threatened   [increases in mallee after fire]
Nullarbor Plain (NUL02)Nullarbor
 Least Concern   [increases in mallee after fire]
Yalata (NUL03) 
 Least Concern   [increases in mallee after fire]
Barrier Range (BHC01)Broken Hill Complex
 Data Deficient
Breakaways (STP01)Stony Plains
 Least Concern
Oodnadatta (STP02) 
 Least Concern
Macumba (STP05) 
 Near Threatened
Witjira (STP06) 
 Least Concern
Baltana (STP07) 
 Least Concern
Lake Pure (CHC07)Channel Country
 Rare   (IUCN: RA d(ii))
Everard Block (CER03)Central Ranges
 Least Concern
Tieyon (FIN03)Finke
 Near Threatened
IBRA regions
DISPLAY ALL
3 of 6 subregionsFlinders Lofty BlockLeast Concern
, Rare
, Data Deficient
3 of 6 subregionsMurray Darling DepressionLeast Concern
, Rare
, Data Deficient
6 of 8 subregionsGawlerLeast Concern
4 of 4 subregionsGreat Victoria DesertLeast Concern
, Near Threatened
2 of 3 subregionsNullarborLeast Concern
Barrier Range (BHC01)Broken Hill ComplexData Deficient
5 of 7 subregionsStony PlainsLeast Concern
, Near Threatened
Lake Pure (CHC07)Channel CountryRare
  (IUCN: RA d(ii))
Everard Block (CER03)Central RangesLeast Concern
Tieyon (FIN03)FinkeNear 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 Maireana]
SA Flora:
Flora of South Australia Edition 5
Name derivation:
'Maireana' after the 19th century belgium botanist Adolphe Lemaire and 'triptera' three winged.
Distribution:
Found in mallee areas growing  in heavy slightly saline soil.
Plant description:
Compact bluish-green shrub to 50 cm high, glabrous except for pubescent in the leaf axils. Leaves alternate, dense, slender and subterete, to 10 mm long. Flowers solitary in leaf axils. Flowering May-September.
Fruit type:
Fruiting perianth glabrous, drying to dark brown or black, with a turbinate tube, and usually 5 vertical wings running the length of the tube, alternate to the perianth segments and fusing with the horizontal wing; horizontal wing 8 mm wide, without a radial slit.
Seed type:
Seeds are brown and disc shaped, up to 1.5 mm diameter with overlapping embryo tip forming a small beak.
Embryo type:
Peripheral
Seed collecting:
Collect seeds when fruits are brown and papery. Check inside several fruits for the presence of well developed seed before making a collection. Strip or shake fruiting branches into a container.
Seed cleaning:
Remove twigs and other plant material.
Germination table:
DateResultT0T50Pre-treatment | Germination medium | Incubator: Photoperiod / Thermoperiod
Apr-1492%7 d7 d seeds excised from fruit;
1% agar;
Incubated under spring/autumn conditions
Apr-140%NANA leached in water 24 h;
1% agar;
Incubated under spring/autumn conditions
Apr-140%NANA
1% agar;
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)