Plants of
South Australia
Olearia muelleri
Compositae
Mueller's Daisy-bush
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Regional Species Conservation Assessments per IBRA subregion.
Least concern
Near threatened
Rare
Vulnerable
Endangered
Critically endangered
Extinct
Data deficient
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Hawker
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Botanical art

Kath Alcock painting: 1.

Etymology

Latin 'olearius' pertaining to oil, from 'olea' olive and 'muelleri' after the Australian botanist Baron Ferdinand von Mueller (1825-1896)

Distribution and status

In mallee and woodland communities on loams and sandy soils
Herbarium regions: North Western, Nullarbor, Gairdner-Torrens, Flinders Ranges, Eastern, Eyre Peninsula, Northern Lofty, Murray, Yorke Peninsula
NRM regions: Alinytjara Wilurara, Eyre Peninsula, Northern and Yorke, South Australian Arid Lands, South Australian Murray-Darling Basin
AVH map: SA distribution map (external link)

Plant description

Spreading shrub to 1.5m high. Leaves alternate, sessile, broadly cuneate or orbicular with a narrowed base, 6-14 mm long, 5-10 mm wide, glabrous. Capitula solitary, terminal, almost sessile 13�31 mm wide. Ray florets 7�13, white, disc florets 12�18, yellow. Flowering August - October. Fruits are achenes terete, 2-4 mm long, densely sericeous; pappus bristles 40-50, 5-9 mm long, subequal

Seeds stored:
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LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
 
MSB

1,600 (1.14 g)
3-Nov-2005DJD182
Eyre Peninsula
BGA 
MSB
11,750 (10.8 g)
11,750 (10.8 g)
50+28-Oct-2004MOL4687
Gairdner-Torrens
31-Mar-200695%-18°C
BGA 
MSB
4,400 (5.35 g)
4,400 (5.35 g)
40+16-Oct-2007DJD902
Eyre Peninsula
19-Sep-200870%-18°C
 
MSB

3,200 (3.51 g)
3018-Sep-2009DJD1580
Gairdner-Torrens
75%
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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