Seeds of South Australia
Glinus orygioides (Aizoaceae)
Desert Carpet-weed
List of species for Glinus
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Seed collecting:
January to December
Herbarium region:
Lake Eyre
NRM region:
South Australian Arid Lands
IBRA regions
Macumba (STP05)Stony Plains
 Rare   (IUCN: RA d(i,ii))   [cattle trampling a threat; perennial]
Witjira (STP06) 
 Rare   (IUCN: RA d(i,ii))   [cattle trampling a threat; perennial]
Sturt Stony Desert (CHC02)Channel Country
 Rare   (IUCN: RA d(ii))
Lake Pure (CHC07) 
 Rare   (IUCN: RA d(ii))   [cattle trampling a threat; perennial]
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 Glinus]
Name derivation:
Glinus from the Greek 'glinos' meaning a plant with sweet sap; may have been a reference to maple. Orygioides means resembling the genus Orygia.
Distribution:
Found in the north and north-eastern parts of South Australia, growing in seasonally damp places. Also found in Western Australia, Northern Territory, Queensland and New South Wales.
Status:
Native. Rare in south Australia. Presume extinct in New South Wales. Uncommon in the other states.
Plant description:
Prostrate or spreading perennial herb to 50 cm diameter, the whole plant glabrous except for the youngest parts. Leaves opposite and/or alternate, semisucculent, oblanceolate to obovate, to 15 mm long, obtuse. Flowers in terminal or, less often, leaf-opposed clusters. Perianth segments white or with a pinkish tinge. Stamens 15–20 with a few staminodes, carpels 3 or 4, styles 3 or 4. Flowers possible all year round.
Fruit type:
Brown capsules.
Seed type:
Shiny red-black, reinform seed to 1.2 mm long and 0.7 mm wide, with striated surface. Seeds larger than in the other two species.
Embryo type:
Peripheral.
Seed collecting:
Collect capsules that are maturing, turning brown and contain hard, brown seeds inside.
Seed cleaning:
Place the capsules in a tray and leave to dry for one to two weeks. Then rub the capsules gently by hand to dislodge the seeds. Use a sieve to separate the unwanted material. Be careful as the seeds are very small. 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 average, at 70%.
Seed germination:
This species has physiological dormancy and can be difficult to germinate.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
9000 (1.9 g)
9000 (1.9 g)
50+29-Sep-2007MJT119
Lake Eyre
19-Sep-200870%-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:
DateResultT0T50Pre-treatment | Germination medium | Incubator: Photoperiod / Thermoperiod
August 201312%56dNA None
1% water agar supplemented with 1000 mg/L gibberellic acid (pH adjusted to 6.5)
10 hrs (6 weeks); then 14 hrs  /  15°C for 20 hrs, 5°C for 4 hrs (6 weeks); then 30°C for 14 hrs, 15°C for 10 hrs
Result: Maximum percentage of germination observed.
T0: Number of days before first germinant observed.
T50: Number of days to achieve 50% germination.
Pre-treatment: The initial treatment that the seeds received prior to placement on germination media.
Germination medium: The substrate that seeds were placed on for the duration of the germination experiment.
Incubator conditions:
Photoperiod: The duration of light exposure that the seeds were subject to during a 24 hour period.
Thermoperiod: The constant or diurnal temperatures that seeds were subject to during a 24 hour period.
Winter conditions: 15°C 20 h (3am→11pm); 5°C 4 h (11pm→3am) / 10 h light (8am→6pm); 14 h dark (6pm→8am)
Spring/Autumn conditions: 22°C 12 h (8am→8pm); 10°C 12 h (8pm→8am) / 12 h light (8am→8pm); 12 h dark (8pm→8am)
Summer conditions: 30°C 14 h (6am→8pm); 15°C 10 h (8pm→6am) / 14 h light (6am→8pm); 10 h dark (8pm→6am)