Seeds of South Australia
Brachyscome parvula (Compositae)
Coast Daisy
List of species for Brachyscome
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Seed collecting:
October to January
Herbarium regions:
Northern Lofty, Murray, Southern Lofty, South Eastern
NRM regions:
Adelaide and Mount Lofty Ranges, South Australian Murray-Darling Basin, South East
IBRA regions
Mount Gambier (SVP02)Southern Volcanic Plain
 Data Deficient   [no records; AD specimen on loan, not yet databased]
Bridgewater (NCP01)Naracoorte Coastal Plain
 Rare   (IUCN: RA d(i,ii))
Glenelg Plain (NCP02) 
 Vulnerable   (IUCN: VU B2ab(ii,iii))
Lucindale (NCP03) 
 Near Threatened   [stronghold]
Tintinara (NCP04) 
 Data Deficient   [no records but may occur here]
Fleurieu (KAN02)Kanmantoo
 Endangered   (IUCN: EN B2ab(i,ii,iii))   (Probable Decline)   [limited habitat; weeds a threat]
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Endangered   (IUCN: EN B2ab(i,ii,iii))   (Probable Decline)   [limited habitat; weeds 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 Brachyscome]
Name derivation:
Brachyscome from the Greek 'brachys' meaning short and 'kome' meaning hair; referring to the short bristles or hairs of the pappus. Parvula from the Latin 'parvus' meaning small; alluding to its appearance.
Scattered eastward from the Mount Lofty Ranges to the lower South-east in South Australia, growing on coastal cliffs and saline, marshy ground near the sea, to inland grassland, woodland and forest. Also found in Victoria and Tasmania.
Native. Rare in South Australia. Common in all the other states. This daisy is endangered in the Adelaide and Mount Lofty Ranges region where it is only known from a couple of small extant populations in the Mt Crawford area. The SA Seed Conservation Centre collected ~700 seeds in 2016 with support from AMLR NRM and has propagated a number of plants for a Seed Production Area in the Adelaide Botanic Gardens with the assistance of Marden College students.
Plant description:
Annual or perennial herb to 40 cm high with erect or ascending, hairless, branching stems. Basal leaves hairless, entire and linear to narrowly oblanceolate or lobed to 7 cm long. Other leaves entire or lobed to 10 cm long, hairless or with sparse glandular hairs. Flowers are small white to lilac daisy. Flowering between September and April.
Fruit type:
Small brown daisy heads.
Seed type:
Dark brown to black pyramid-shaped seed to 1.5 mm long and 0.5 mm wide, with a smooth surface.
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 three collections, the seed viability were average to high, ranging from 50% to 100%.
Seed germination:
This species may have physiological dormancy that needs to be overcome for the seed to germinate. Winter and spring/autumn conditions produce high germination. However, gibberellic acid (250 mg/L) or potassium nitrate (100 mg/L) added to water agar can increase germination.  After-ripening at 45 degrees celsius  for 1 - 2 months or at 15 - 30 degrees celcius for up to 12 months can alleviate dormancy.
Seeds stored:
LocationNo. of seeds
(weight grams)
of plants
Collection number
Collection location
% ViabilityStorage
BGA7600 (0.39 g)8-Oct-2006DJD465
South Eastern
1-Aug-2007100%+5°C, -18°C
450 (0.0284 g)
South Eastern
BGA8100 (0.4277 g)23-Oct-2006MJT006
South Eastern
1-Aug-200750%+5°C, -18°C
TST6711-Jan-2012+5°C, -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-1792%714 500 mg/L gibberellic acid for 24 h;
1% agar;
Incubated under winter conditions
May-1787%721 500 mg/L gibberellic acid for 24 h;
1% agar;
Incubated under spring/autumn conditions
Sep-1270%7 d42 d
1% agar with 250 mg/L gibberellic acid;
12/12;  /  18°C
Jul-1063%14 d42 d
1% agar;
Incubated under winter conditions
Jul-1032%28 dNA
1% agar;
Incubated under spring/autumn conditions
Jul-1010%28 dNA
1% agar;
Incubated under summer 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)