Seeds of South Australia
Brachyscome debilis (Compositae)
Weak Daisy
List of species for Brachyscome
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Seed collecting:
January to December
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
IBRA regions
Bridgewater (NCP01)Naracoorte Coastal Plain
 Vulnerable   (IUCN: VU B2ab(ii,iii))   (Probable Decline)
Glenelg Plain (NCP02) 
 Vulnerable   (IUCN: VU D2)   [no records]
Lucindale (NCP03) 
 Vulnerable   (IUCN: VU D2)   [no records]
Tintinara (NCP04) 
 Vulnerable   (IUCN: VU D2)   [no records]
Fleurieu (KAN02)Kanmantoo
 Vulnerable   (IUCN: VU D2)   [limited habitat]
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Vulnerable   (IUCN: VU D2)   [limited habitat]
Southern Flinders (FLB04) 
 Data Deficient
Central Flinders (FLB06) 
 Rare   (IUCN: RA d(i,ii))   [edge of range, check ID, outlier]
Eyre Mallee (EYB05)Eyre Yorke Block
 Data Deficient   [on loan, lack of records]
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 Brachyscome]
Name derivation:
Brachyscome from the Greek 'brachys' meaning short and 'kome' meaning hair; referring to the short bristles or hairs of the pappus. Debilis from the Latin 'debilis' meaning weak, frail, small; alluding to its habit.
Distribution:
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 hollow in rocks or in seepage areas. Also found in New South Wales and Victoria.
Status:
Native. Rare in South Australia. Common in the other states.
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 be all year round depend on rainfall.
Fruit type:
Brown daisy heads.
Seed type:
Brown ovoid seed to 1.5 mm long and 0.5 mm wide.
Embryo type:
Spatulate fully developed.
Seed collecting:
Pick heads that are maturing, drying off, with brown seeds that dislodge easily.
Seed cleaning:
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.
Seed viability:
From one collection, the seed viability was average, at 60%.
Seed germination:
This species has physiological dormancy that need to be overcome for the seed to germinate.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
RJB745941-Jan-2012-18°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.