Plants of
South Australia
Brachyscome muelleri
Compositae
Corunna Daisy
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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
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Oodnadatta
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Keith
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Etymology

Brachyscome from the Greek 'brachys' meaning short and 'kome 'meaning hair, referring to the tuft of short bristles or hairs of the pappus. Muelleri named in honour of Ferdinand von Mueller (1825-1896), botanist, plant collector and Government Botanist of Victoria.

Distribution and status

Endemic to South Australia and known from only one location at Baxter Hills near Iron Knob, growing in loam on moist, shaded cliff slopes. The type specimen was collected by Ferdinand Mueller in 1851 near the Para River in the vicinity of Gawler with another collection gathered from Paskeville by Ernest Beythein. Native. Very rare in South Australia.
Herbarium region: Eyre Peninsula
NRM region: South Australian Arid Lands
AVH map: SA distribution map (external link)

Plant description

An annual herb to 20 cm high with hair-less flowering stems arising from a basal rosette of leaves. Basal leaves are deeply serrated. Flowers are white daisies appearing between August and September. Fruits are small brown-black daisy heads with numerous exposed seeds. Seeds are small black convex seed to 1.5 mm long and 1 mm wide. Seed embryo type is spatulate fully developed.

Seed collection and propagation

Collect seeds between September and December. Pick mature seed-heads by hand, when seeds have turned black. Place the heads in a tray and leave to dry for a week. Then rub the heads gently with your hands to dislodge the seeds. Use a sieve to separate the unwanted material. 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 viability is high for this species. This species has physiological dormancy that needs to be overcome for the seed to germinate.

Fire response

Obligate re-seeder.

Longevity: 1 year

Time to flowering: 1 year

Recovery work

In 2020-2021 this species was assessed post-fire in 1 year old fire scars. A total of 45,000 seeds have been collected from seed orcharding & banked in 2020. Germination screening testing the response to fire cues will be undertaken in 2021.This project was supported by the World Wildlife Fund program.

Seeds stored:
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LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
14,800 (2 g)
3,600 (0.55 g)
16-Sep-2006PJA99
Eyre Peninsula
1-Aug-200795%+5°C, -18°C
BGA13,200 (1.78 g)200+28-Sep-2010PJA203
Eyre Peninsula
1-Jan-201295%+5°C, -18°C
BGA200 (0.03 g)22-Sep-2009Corunna
Eyre Peninsula
1-Jan-201290%-18°C
BGA1,400 (0.19 g)1791-Dec-2004PJA83
Eyre Peninsula
2-May-201775%-18°C
BGA5,900 (0.91 g)5010-Jan-2019TST1409
Eyre Peninsula
24-Apr-2019100%-18°C
BGA3,500 (0.43 g)20-Jan-2009Glasshouse
Eyre Peninsula
1-May-2019 -18°C
BGA450,000 (70.28 g)15014-Oct-2019TST1409
Eyre Peninsula
24-Jun-202085%-18°C, -80°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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