Plants of
South Australia
Brachyscome parvula
Compositae
Coast 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: 13.

Etymology

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.

Distribution and status

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.
Herbarium regions: Northern Lofty, Murray, Southern Lofty, South Eastern
NRM regions: Adelaide and Mount Lofty Ranges, South Australian Murray-Darling Basin, South East
AVH map: SA distribution map (external link)

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. Fruits are small brown daisy heads. Seeds are dark brown to black pyramid-shaped seed to 1.5 mm long and 0.5 mm wide, with a smooth surface. Seed embryo type is spatulate fully developed.

Seed collection and propagation

Collect seeds between October and January. 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 three collections, the seed viability were average to high, ranging from 50% to 100%. 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:
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LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA8,100 (0.42 g)23-Oct-2006MJT6
South Eastern
1-Aug-200750%+5°C, -18°C
BGA7,600 (0.39 g)8-Oct-2006DJD465
South Eastern
1-Aug-2007100%+5°C, -18°C
BGA 
MSB
450 (0.028 g)
3,500 (0.21 g)
9-May-2006DJD465
South Eastern
1-Aug-200780%-18°C
BGA13,400 (0.7 g)19-Nov-2008TST671
South Eastern
1-Jan-201295%+5°C, -18°C
200+19-Nov-2008TST671
South Eastern
1-Nov-201795%-18°C
BGA600 (0.04 g)50+8-Dec-2016DJD3552
Southern Lofty
1-Nov-201783%-18°C
BGA3,700 (0.37 g)50+15-Nov-2017JRG625
South Eastern
30-Jun-201895%-18°C
BGA15,600 (1.25 g)50+1-Dec-2017DJD3552
Southern Lofty
30-Jun-201895%-18°C, -80°C
BGA3,000 (0.19 g)30+14-Nov-2018DJD3817
Southern Lofty
24-Apr-201985%-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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