Seeds of South Australia
Colobanthus apetalus (Caryophyllaceae)
Coast Colobanth
List of species for Colobanthus
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Seed collecting:
November to March
Herbarium region:
South Eastern
NRM region:
South East
AVH map:
Australian distribution map (external link)
SA Census:
Census of South Australian plants (external link)     [genus Colobanthus]
Name derivation:
Colobanthus from the Greek 'kolobos' meaning stunted and 'anthos' meaning flower; referring to the flower wth no petals. Apetalus from Latin meaning without petals.
Distribution:
Very few records from South Australia and only recorded from the lower South-east, growing along the coast, usually on sheltered dune slopes and in dune swales. Also found in New South Wales, Victoria and Tasmania.
Status:
Native. Very rare in South Australia. Rare in New South Wales and Victoria. Common in Tasmania.
Plant description:
Perennial, almost stemless, and densely tufted herb to 5 cm high. Leaves linear-subulate, concave towards the base, sheathing at the base, attenuated into a long point, to 3 cm long and 1 mm wide, with flattened to rounded, sometimes obscure midrib. Flower-head glabrous, erect, growing from the centre of the leaf-tufts, mostly longer than the leaves, slightly thickened just under the calyx, flower single, terminal with sepals triangular-acute. Flowering between November and February.
Fruit type:
Small capsule slightly longer than the sepals, opening by 5 valves.
Seed type:
Brown slightly reniform seed to 0.5 mm across.
Embryo type:
Peripheral.
Seed collecting:
Collect capsules that are maturing, fat and turning brown and contain hard brown seeds.
Seed cleaning:
Place the capsules in a tray and leave to dry for two weeks. Then rub the capsules gently by hand or with a rubber bung to dislodge the seeds. Use a sieve to separate the unwanted material. Be very careful as the seeds are very small. Seeds should be hard 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.
Seed viability:
From one collection, the seed viability was high, at 100%.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA370 (0.0355 g)3018-Nov-2010DJD2052
South Eastern
1-Jan-2012100%-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.