Plants of
South Australia
Cassinia tegulata
Compositae
Avenue 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
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Oodnadatta
Renmark
Wudinna
Keith
Yunta
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Botanical art

Kath Alcock paintings: 3.

Etymology

Cassinia named after Alexandre-Henri Gabriel de Cassini (1782-1832), a French botanist who published extensively on the Compositae family. Tegulata from the Latin 'tegula' meaning a tile, referring to the scale-like involucral bracts.

Distribution and status

Found in the South-east in South Australia growing in Melaleuca brevifolia and Gahnia filum shrubland in inter-dune flats with shallow grey or yellowish sandy clay soils over limestone, which are seasonally inundated. Also found in Victoria. Native. Very rare in South Australia. Very rare in Victoria.
Herbarium region: South Eastern
NRM region: South East
AVH map: SA distribution map (external link)

Plant description

A small to medium-sized shrub with an upright habit; grey-green to yellowish green, hairy, needle-like leaves; fissured brown bark and off-white to cream flowers at the end of branches. Flowers are honey-scented but leaves and stems are odourless and not sticky. Flowering between February and April. Fruits are light grey, dense round daisy-head. Seeds are brown cylindrical seed to 1 mm long and 0.3 mm wide, with long white pappus at one end. Seed embryo type is spatulate.

Seed collection and propagation

Collect seeds between April and June. Collect heads that are matured, greyish 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. From five collections, the seed viability was average to high, ranging from 75% to 100%. Seeds are non-dormant, viable seed should germinate readily.

Seeds stored:
  Hide
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
32,000 (6.5 g)
32,000 (6.5 g)
6026-May-2005DJD132
South Eastern
14-Sep-200695%+5°C, -18°C
BGA81,000 (7.36 g)5010-Apr-2006DJD449
South Eastern
14-Sep-200675%-18°C
BGA2,000 (0.14 g)40+17-May-2009CRD16
South Eastern
20-Jul-2009100%-18°C
BGA19,000 (1.58 g)1528-May-2009TST736
South Eastern
20-Jul-2009100%-18°C
BGA460,000 (91.76 g)26-May-2005DJD132
South Eastern
15-Feb-2011 +5°C, -18°C
BGA38,700 (12.14 g)29-Apr-2010TST736
South Eastern
1-Jan-201275%-18°C
BGA5,000 (0.37 g)2118-Jun-2015C.Dickson
South Eastern
1-Nov-2017 -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.