Plants of
South Australia
Brachyscome debilis
Compositae
Weak 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
Mount Gambier
Oodnadatta
Renmark
Wudinna
Keith
Yunta
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Botanical art

Kath Alcock paintings: 2.

Etymology

Brachyscome from the Greek 'brachys' meaning short and 'kome' meaning hair, referring to the tuft of short bristles or hairs of the pappus. Debilis from the Latin 'debilis' meaning weak, frail, small, alluding to its habit.

Distribution and status

Scattered records from the Flinders Ranges, southern Mount Lofty Ranges, Eyre Peninsula and the lower South-east in South Australia, growing in woodland in damp mossy hollows in rocks or in seepage areas. Also found in New South Wales and Victoria. Native. Rare in South Australia. Common in the other States.
Herbarium regions: Flinders Ranges, Eastern, Eyre Peninsula, Northern Lofty, Murray, Yorke Peninsula, Southern Lofty, South Eastern
NRM regions: Adelaide and Mount Lofty Ranges, Eyre Peninsula, Northern and Yorke, South Australian Arid Lands, South Australian Murray-Darling Basin, South East
AVH map: SA distribution map (external link)

Plant description

Annual or ephemeral herb to 12 cm high with ascending, sparsely pubescent stems. Basal leaves to 1 cm long, soon withering. Stem leaves with 3-7 linear lobe to 2 cm long, sparsely pubescent. Large white daisy appearing in spring but can flower all year, round depend on rainfall. Fruits are brown daisy-heads. Seeds are brown ovoid seed to 1.5 mm long and 0.5 mm wide. Seed embryo type is spatulate fully developed.

Seed collection and propagation

Collect seeds between January and December. Pick heads that are maturing, drying off, with brown seeds that dislodge easily. Place the seed-heads in a tray and leave to dry for a week. Then gently rub the heads by hand 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. From one collection, the seed viability was average, at 60%. This species has physiological dormancy that need to be overcome for the seed to germinate.

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
6,000 (1.33 g)
6,000 (1.33 g)
30-Oct-2007RJB74594
South Eastern
1-Jan-201260%-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.