Curry Flat-sedge
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Distribution by Herbarium region
Adelaide
Arkaroola
Ceduna
Coober Pedy
Hawker
Innamincka
Marla
Marree
Mount Gambier
Oodnadatta
Renmark
Wudinna
Keith
Yunta
Prior names
Scirpus hamulosus
Distribution and status
Found in the far northern and central parts of South Australia and along the Murray River, growing on moist sandy areas around receding lakes or watercourses. Also found in Western Australia, Northern Territory, and Victoria (and Africa and Asia). Considered an introduced species in Australia, however, its occurrence in remote and otherwise pristine wetlands in central Australia, suggests that the species maybe cosmopolitan and native to this region.
Herbarium regions: Lake Eyre, Gairdner-Torrens, Murray
NRM regions: South Australian Arid Lands, South Australian Murray-Darling Basin
AVH map: SA distribution map (external link)
Seed collection and propagation
Collect seeds between December and March.
| Location | No. of seeds
(weight grams) | Number
of plants | Date
collected | Collection number
Collection location | Date
stored | % Viability | Storage
temperature | | BGA | 1,400,000 (37.95 g) | 200+ | 28-Feb-2017 | DJD3626
Murray | 1-Nov-2017 | 95% | -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:
Display
| Date | Result | T0 | T50 | Pre-treatment | Germination medium | Incubator: Photoperiod / Thermoperiod |
| Jun-17 | 80% | 7 | 14 |
30% hydrogen peroxide for 10 min, water rinse, 500 mg/L gibberellic acid for 44 h;
1% agar;
Incubated under summer conditions |
| Jun-17 | 57% | 7 | 28 |
1% agar;
Incubated under summer conditions |
| Jun-17 | 47% | 28 | NA |
30% hydrogen peroxide for 10 min, water rinse, 500 mg/L gibberellic acid for 44 h;
1% agar;
Incubated under spring/autumn conditions |
| Jun-17 | 6% | 28 | NA |
1% agar;
Incubated under spring/autumn conditions |
| Jun-17 | 0% | NA | NA |
1% agar;
Incubated under winter conditions |
| Jun-17 | 0% | NA | NA |
30% hydrogen peroxide for 10 min, water rinse, 500 mg/L gibberellic acid for 44 h;
1% agar;
Incubated under winter conditions |
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)
