Seeds of South Australia
Cyperus hamulosus (Cyperaceae)
Curry Flat-sedge
List of species for Cyperus
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Seed collecting:
December to March
Herbarium regions:
Lake Eyre, Gairdner-Torrens, Murray
NRM regions:
South Australian Arid Lands, South Australian Murray-Darling Basin
AVH map:
Australian distribution map (external link)
SA Census:
Census of South Australian plants (external link)     [genus Cyperus]
Distribution:
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).
Status:
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.
Plant description:.
No information available
Germination table:
DateResultT0T50Pre-treatment | Germination medium | Incubator: Photoperiod / Thermoperiod
Jun-1780%714 30% hydrogen peroxide for 10 min, water rinse, 500 mg/L gibberellic acid for 44 h;
1% agar;
Incubated under summer conditions
Jun-1757%728
1% agar;
Incubated under summer conditions
Jun-1747%28NA 30% hydrogen peroxide for 10 min, water rinse, 500 mg/L gibberellic acid for 44 h;
1% agar;
Incubated under spring/autumn conditions
Jun-176%28NA
1% agar;
Incubated under spring/autumn conditions
Jun-170%NANA
1% agar;
Incubated under winter conditions
Jun-170%NANA 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)