Plants of
South Australia
Callitris gracilis
Cupressaceae
Slender Cypress-pine
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Regional Species Conservation Assessments per IBRA subregion.
Least concern
Near threatened
Rare
Vulnerable
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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: 6.

Etymology

Callitris from the Greek 'kalos' meaning beautiful and 'treis' meaning three, referring to the arrangement of the leaves in whorls of three. Gracilis from Latin meaning graceful or slender, alluding to the form of the species.

Distribution and status

Found in the Mount Lofty Ranges, Eyre and Yorke Peninsulas and Kangaroo Island, growing in woodlands, mallee and open scrub on shallow limestone soils to deep acid sands. Also found in New South Wales and Victoria. Native. Common in South Australia. Common in the other States.
Herbarium regions: Flinders Ranges, Eastern, Eyre Peninsula, Northern Lofty, Murray, Yorke Peninsula, Southern Lofty, Kangaroo Island, South Eastern
NRM regions: Adelaide and Mount Lofty Ranges, Eyre Peninsula, Kangaroo Island, Northern and Yorke, South Australian Murray-Darling Basin, South East
AVH map: SA distribution map (external link)

Plant description

Erect pine-like tree to 20 m tall or straggly tree in less favourable habitats, with separate male and female parts on the same tree. Leaves to 4 mm long, dark green, occasionally glaucous; outer side rounded. Fruits are grey-brown round woody cones to 4 cm diameter with wrinkled surface and scattered tubercles, single or in groups of 2 or more. Seeds are brown ovoid seeds to 5 mm long and 3 mm wide, with wing to 3 mm wide on either side.

Seed collection and propagation

Collect seeds between January and December. Collect cones that are not open but large, hard and dark. These will contain maturing seeds. Place the cones in a tray and leave to dry for 3-5 weeks to allow the cones to open naturally. Then shake the cones in a bucket to dislodge the seeds. Use a sieve to separate the seeds from the cones. 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 two collections, the seed viability was low to average, ranging from 25% to 60%. Viable seed should germinate readily, if stored in a fridge prior to sowing in winter.

Seeds stored:
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LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA44,457 (378.44 g)5425-May-2004MKJ34
South Eastern
23-Mar-200660%-18°C
BGA 
MSB
1,800 (15.4 g)
1,800 (15.4 g)
1516-Sep-2003PJA26
Murray
23-Mar-200625%-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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