Plants of
South Australia
Cassinia arcuata
Compositae
Drooping Cassinia
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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

Cassinia named after Alexandre-Henri Gabriel de Cassini (1782-1832), a French botanist who published extensively on the Compositae. Arcuata from Latin 'arcuatus' meaning curved or bent like a bow, referring to the bowed flowering branches.

Distribution and status

Found in southern South Australia growing on dry, poor ground in mallee and woodland. Also found in Western Australia, New South Wales and Victoria. Native. Common in South Australia. Rare in Western Australia. Common in the other States.
Herbarium regions: Flinders Ranges, Eyre Peninsula, Northern Lofty, Murray, Yorke Peninsula, Southern Lofty
NRM regions: Adelaide and Mount Lofty Ranges, Eyre Peninsula, Northern and Yorke, South Australian Murray-Darling Basin
AVH map: SA distribution map (external link)

Plant description

Perennial shrub to 2 m high with a curry-like scent; stems erect, densely branched with branchlets covered in creamy hairs. Leaves spreading, linear, more or less decurrent; obtuse, to 10 mm long and 1 mm wide; upper surface glabrous or subglabrous, green, lower surface with creamy hairs, almost wholly obscured by the recurved margins. Inflorescence a leafless pyramidal spike; dense to loose, erect to drooping, with buff-coloured flowers. Flowering between January and April. Fruits are loose golden daisy heads. Seeds are brown cylindrical seed to 1 mm long and 0.4 mm wide, with long white pappus at one end. Seed embryo type is spatulate.

Seed collection and propagation

Collect seeds between March and June. Collect heads that are matured,golden brown and contain brown seeds. Place the heads in a tray for one to two week to dry. Then rub the heads gently with your hands to dislodge the seeds. Use a sieve to separate any unwanted material. Viable seeds will be small and brown. 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. Seeds are non-dormant, viable seed should germinate readily.

Seeds stored:
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LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA12,000 (1.01 g)20+26-May-2012KHB689
Flinders Ranges
1-Jan-201665%-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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