Seeds of South Australia
Maireana melanocarpa (Chenopodiaceae)
Black-fruit Bluebush
List of species for Maireana
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Seed collecting:
November to May
Herbarium regions:
Lake Eyre, Flinders Ranges, Eastern
NRM region:
South Australian Arid Lands
IBRA regions
Northern Flinders (FLB05)Flinders Lofty Block
 Near Threatened   [endemic to SA, grazing a threat; limited habitat]
Maralinga (GVD03)Great Victoria Desert
 Rare   (IUCN: RA d(i,ii))   [only 1 record]
Murnpeowie (STP03)Stony Plains
 Rare   (IUCN: RA d(i,ii))   [endemic to SA, grazing a threat]
Witjira (STP06) 
 Rare   (IUCN: RA d(ii))   [endemic to SA, grazing a threat]
Baltana (STP07) 
 Rare   (IUCN: RA d(i,ii))   [endemic to SA, grazing a threat]
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; 'melanocarpa' meaning black fruited. 
Distribution:
Endemic to South Australia, mostly recorded from the northern Flinders Ranges region with a couple of records further north.
Status:
Native, Rare in South Australia
Plant description:
Branched shrub to approximately 50 cm, woolly branches with alternate semiterete woolly leaves. Glabrous flowers with woolly margins. Fruits and flowers from May to September.
Fruit type:
Fruiting perianth dark-brown to black when dry,with a simple, horizontal wing to 6 mm diameter, with prominent dark-brown venation and a single radical slit. 
Seed type:
Ellipsoid to circular, brown convex seed
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.
Seed germination:
Germination may be inhibited by the fruiting perianth as levels increased after its partial removal.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA1600 (6.05 g)30+20-Dec-2012KHB726
Flinders Ranges
27-Feb-2014 (Xray 54%)-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
May-1327%14 dNA fruit partially removed;
1% agar;
Incubated under spring/autumn conditions
May-130%NANA
1% agar with 250 mg/L gibberellic acid (pH 6.5);
Incubated under spring/autumn conditions
May-130%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)