Plants of
South Australia
Maireana pentagona
Chenopodiaceae
Hairy Bluebush
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Regional Species Conservation Assessments per IBRA subregion.
Least concern
Near threatened
Rare
Vulnerable
Endangered
Critically endangered
Extinct
Data deficient
Adelaide
Arkaroola
Ceduna
Coober Pedy
Hawker
Innamincka
Marla
Marree
Mount Gambier
Oodnadatta
Renmark
Wudinna
Keith
Yunta
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Botanical art

Kath Alcock paintings: 3.

Etymology

'Maireana', after the 19th century French botanist, Adolphe Lemaire and Greek 'penta', five, 'gona', angles

Distribution and status

Widespread, especially on heavier red and brown soils. Often found growing in large numbers on cracking grey clay River Murray floodplains. Rare in South Australia, common in Victoria and New South Wales, less common in Queensland and Western Australia.
Herbarium region: Murray
NRM region: South Australian Murray-Darling Basin
AVH map: SA distribution map (external link)

Plant description

Prostrate or ascending perennial to 20 cm high. Leaves alternate, linear; 7-12 rarely to 20 mm long; appressed-villous. Flowers solitary, bisexual; densely woolly-villous. Flowering August - September. Fruits are fruiting perianth to 4 mm in diameter, covered with woolly hairs and with a central raised pentagonal area surrounded at its base by a narrow wing which is sometimes divided into 5 short truncate lobes. Seeds are ellipsoid to circular, convex brown seed. Seed embryo type is peripheral

Seed collection and propagation

Collect seeds between October and November. 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. Remove twigs and other plant material. Approximately 50 % of seeds germinated with no treatment.

Seeds stored:
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LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
 
MSB

700 (1.09 g)
40-5017-May-2006PJA131
Murray
BGA3,000 (10.21 g)5018-May-2007RJB72086
North Western
19-Sep-200880%+5°C, -18°C
BGA3,000 (4.86 g)50+19-Oct-2011DJD2287
Murray
1-Nov-201281%-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:
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