Plants of
South Australia
Senecio macrocarpus
Compositae
Large-fruit Groundsel
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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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Etymology

Lanin 'senex' an old man, refers to the white pappus and Greek 'macros' large, 'carpos' fruit

Distribution and status

Occuring in a variety of habitats including grasslands, sedgelands, shrublands and woodlands. Often in depressions that are waterlogged in winter, on sandy loam to heavy clay soils. Vulnerable in South Australia
Herbarium regions: Flinders Ranges, Northern Lofty, Murray, Yorke Peninsula, Southern Lofty, South Eastern
NRM regions: Adelaide and Mount Lofty Ranges, Northern and Yorke, South Australian Arid Lands, South Australian Murray-Darling Basin, South East
AVH map: SA distribution map (external link)

Plant description

Perennial herb 20-70cm high. Leaves alternate, linear, 10cm long, 2-5mm wide, grey-green, covered with fine hairs. Inflorescence a cyme with 2-10 capitula 18mm x 20mm. Up to 150 yellow florets, surrounded by linear, pointed bracts. Flowering September - October. Fruits are achenes 4.5-5 rarely 6 mm long, brown, rostrate, covered in very short, greyish hairs; pappus deciduous, dimorphic.

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
13,000 (6.4 g)
13,000 (6.4 g)
100+12-Oct-2005DJD141
South Eastern
14-Sep-200690%+5°C, -18°C
BGA21,700 (6.24 g)5018-Sep-2007RJB74668
South Eastern
19-Sep-2008100%+5°C, -18°C
BGA8,350 (2.58 g)50+15-Sep-2011DJD2242
South Eastern
1-Nov-201244%-18°C
BGA5,240 (25.62 g)1-Oct-2013KHB306
Flinders Ranges
24-Mar-201595%+5°C, -18°C
BGA12,145 (5.83 g)1-Oct-2014KHB306
Flinders Ranges
1-Jan-201695%-18°C
BGA15,000 (8.86 g)91-Oct-2018KHB306
Flinders Ranges
24-Apr-201980%-18°C, -80°C
BGA68,600 (34.13 g)50+25-Sep-2018JRG689
South Eastern
24-Apr-201985%-18°C, -80°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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