Seeds of South Australia
Schoenoplectiella dissachantha (Cyperaceae)
Blunt Club-rush
List of species for Schoenoplectiella
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Herbarium regions:
North Western, Lake Eyre, Nullarbor, Gairdner-Torrens, Eastern, Murray
NRM regions:
Alinytjara Wilurara, South Australian Arid Lands, South Australian Murray-Darling Basin
IBRA regions
SUMMARY
Murray Scroll Belt (RIV06)Riverina
 Vulnerable   (IUCN: VU D1+2)
Gawler Lakes (GAW03)Gawler
 Rare   (IUCN: RA d(ii))   [flood response]
Arcoona Plateau (GAW04) 
 Rare   (IUCN: RA d(ii))   [flood response]
Roxby (GAW07) 
 Rare   (IUCN: RA d(ii))   [responds to good years of rain; in niche habitats]
Commonwealth Hill (GAW08) 
 Rare   (IUCN: RA d(ii))   [responds to good years of rain; in niche habitats]
Tallaringa (GVD05)Great Victoria Desert
 Rare   (IUCN: RA d(ii))   [responds to good years of rain; in niche habitats]
Barrier Range Outwash (BHC04)Broken Hill Complex
 Rare   (IUCN: RA d(ii))   [spread by birds; ephemeral]
Bimbowrie (BHC05) 
 Rare   (IUCN: RA d(ii))   [spread by birds; ephemeral]
Warriner (SSD04)Simpson Strzelecki Dunefields
 Rare   (IUCN: RA d(ii))   [responds to good years of rain; in niche habitats]
Strzelecki Desert (SSD05) 
 Rare   (IUCN: RA d(i,ii))   [responds to good years of rain; in niche habitats]
Breakaways (STP01)Stony Plains
 Rare   (IUCN: RA d(ii))   [responds to good years of rain; in niche habitats]
Oodnadatta (STP02) 
 Rare   (IUCN: RA d(ii))   [responds to good years of rain; in niche habitats]
Murnpeowie (STP03) 
 Rare   (IUCN: RA d(ii))   [responds to good years of rain; in niche habitats]
Macumba (STP05) 
 Rare   (IUCN: RA d(ii))   [responds to good years of rain; in niche habitats]
Witjira (STP06) 
 Rare   (IUCN: RA d(ii))   [responds to good years of rain; in niche habitats]
Sturt Stony Desert (CHC02)Channel Country
 Rare   (IUCN: RA d(ii))   [responds to good years of rain; in niche habitats]
Coongie (CHC06) 
 Rare   (IUCN: RA d(ii))   [responds to good years of rain; in niche habitats]
Lake Pure (CHC07) 
 Rare   (IUCN: RA d(ii))   [responds to good years of rain; in niche habitats]
Pedirka (FIN04)Finke
 Rare   (IUCN: RA d(ii))   [responds to good years of rain; in niche habitats]
IBRA regions
DISPLAY ALL
Murray Scroll Belt (RIV06)RiverinaVulnerable
  (IUCN: VU D1+2)
4 of 8 subregionsGawlerRare
Tallaringa (GVD05)Great Victoria DesertRare
  (IUCN: RA d(ii))   [responds to good years of rain; in niche habitats]
2 of 4 subregionsBroken Hill ComplexRare
2 of 4 subregionsSimpson Strzelecki DunefieldsRare
5 of 7 subregionsStony PlainsRare
3 of 4 subregionsChannel CountryRare
Pedirka (FIN04)FinkeRare
  (IUCN: RA d(ii))   [responds to good years of rain; in niche habitats]
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 Schoenoplectiella]
Name derivation:
Greek 'schoinos' a rush, 'plektos' twisted and 'dis' two, 'akantha' thorn.
Distribution:
Grows in seasonally wet open situations.
Status:
Native
Plant description:
Annual tufted herb to 30cm high. Leaves usually reduced to sheaths. Inflorescence a cluster of 1–5 (rarely to 10) sessile spikelets. Spikelets 1-3 in a cluster, sessile, yellowish or greenish-yellow, oblong, cylindrical, obtuse, usually 7-10 mm long, many-flowered. Flowering March-April .
Fruit type:
Nut subglobose or obovoid, unequally biconvex, 1.0–1.3 mm long, 1 mm wide, closely and prominently transversely rugose, yellow-brown to black, shining.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
14000 (4.76 g)
14000 (4.76 g)
13-Mar-2007RJB70961
Gairdner-Torrens
1-Aug-200790%-18°C
BGA 
MSB
34500 (12.6 g)
34500 (12.6 g)
12-Mar-2007RJB70963B
Gairdner-Torrens
1-Aug-200780%-18°C
BGA2900 (1.77 g)50+11-Aug-2010TST940
Lake Eyre
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.
Germination table:
DateResultT0T50Pre-treatment | Germination medium | Incubator: Photoperiod / Thermoperiod
Jul-170%NANA 30% hydrogen peroxide for 20 min, water rinse, 500 mg/L gibberellic acid for 44 h;
1% agar;
Incubated under spring/autumn conditions
Jul-170%NANA dry heat 100°C oven for 10 min, 30% hydrogen peroxide for 20 min, water rinse, 500 mg/L gibberellic acid for 44 h;
1% agar;
Incubated under spring/autumn conditions
Jul-170%NANA 30% hydrogen peroxide for 20 min, water rinse, 500 mg/L gibberellic acid for 44 h;
1% agar;
Incubated under summer conditions
Jul-170%NANA dry heat 100°C oven for 10 min, 30% hydrogen peroxide for 20 min, water rinse, 500 mg/L gibberellic acid for 44 h;
1% agar;
Incubated under summer conditions
Jul-170%NANA 30% hydrogen peroxide for 20 min, water rinse, 500 mg/L gibberellic acid for 44 h;
1% agar;
Incubated under winter conditions
Jul-170%NANA dry heat 100°C oven for 10 min, 30% hydrogen peroxide for 20 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)