Seeds of South Australia
Callitris rhomboidea (Cupressaceae)
Oyster Bay Pine
List of species for Callitris
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Seed collecting:
January to December
Herbarium regions:
Southern Lofty, Kangaroo Island, South Eastern
NRM regions:
Adelaide and Mount Lofty Ranges, Kangaroo Island, South East
IBRA regions
Lucindale (NCP03)Naracoorte Coastal Plain
 Vulnerable   (IUCN: VU D2)
Tintinara (NCP04) 
 Vulnerable   (IUCN: VU D2)   (Probable Decline)   [Mt Monster popn.]
Kangaroo Island (KAN01)Kanmantoo
 Near Threatened
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Near Threatened   [common in Mt Crawford/Warren CP area]
Lowan Mallee (MDD04)Murray Darling Depression
 Rare   (IUCN: RA d(i,ii))
RSCA map:
Regional Species Conservation Assessments per IBRA subregion. Please click the thumbnail map.
AVH map:
Australian distribution map (external link)
SA Census:
Census of South Australian plants (external link)     [genus Callitris]
Name derivation:
Callitris from the Greek 'kalos' meaning beautiful and 'treis' meaning three; referring to the arrangement of the leaves in whorls of three. Rhomboidea  from the Latin 'rhombus' meaning rhomb; referring to the rhomboid shape of the seed cone scales.
Distribution:
Found on Kangaroo Island, southern Mount Lofty Ranges and the South-east in South Australia, growing in woodland. Also found in Queensland, New South Wales, Victoria and Tasmania. Introduced in Western Australia.
Status:
Native. Uncommon in South Australia. Common in the other states.
Plant description:
Tree to 15 m tall. Bark not fissured. Branches spreading to erect. Male and female cones on the same tree. Leaves to 2.5 mm long, usually somewhat glaucous, dorsal surface prominently but not acutely keeled.
Fruit type:
Male cones solitary or clustered, ovoid, to 2 mm long. Female cones usually clustered, on clustered fruiting branchlets, ovoid to depressed-globular, to 20 mm diameter, persistent and holding seeds for several years after maturity, cone scales 6, thick, with a distinct, short, broad, conical, dorsal protuberance below apex.
Seed type:
Brown ovoid seeds to 3 mm long and 2 mm wide, with wing to 3 mm wide on either side.
Seed collecting:
Collect cones that are not open but large, hard and dark. These will contain maturing seeds.
Seed cleaning:
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.
Seed viability:
From one collection, the seed viability was low, at 35%.
Seed germination:
Viable seed should germinate readily, if stored in a fridge prior to sowing in winter.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
27693 (130.71 g)
28759
259-Jan-2004MKJ 17
Kangaroo Island
23-Mar-200635%-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.