Seeds of South Australia
Bulbostylis barbata (Cyperaceae)
Bearded Watergrass
List of species for Bulbostylis
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Seed collecting:
January to December
Herbarium regions:
North Western, Lake Eyre, Gairdner-Torrens, Eyre Peninsula
NRM regions:
Alinytjara Wilurara, Eyre Peninsula, South Australian Arid Lands
IBRA regions
SUMMARY
Gawler Volcanics (GAW02)Gawler
 Rare   (IUCN: RA d(ii))
Kingoonya (GAW05) 
 Rare   (IUCN: RA d(ii))
Roxby (GAW07) 
 Near Threatened   [common after summer rain; ephemeral]
Commonwealth Hill (GAW08) 
 Near Threatened   [common after summer rain; ephemeral]
Kintore (GVD04)Great Victoria Desert
 Near Threatened   [common after summer rain; ephemeral]
Tallaringa (GVD05) 
 Near Threatened   [common after summer rain; ephemeral]
Strzelecki Desert (SSD05)Simpson Strzelecki Dunefields
 Near Threatened   [common after summer rain; ephemeral]
Breakaways (STP01)Stony Plains
 Near Threatened   [common after summer rain; ephemeral]
Oodnadatta (STP02) 
 Near Threatened   [common after summer rain; ephemeral]
Macumba (STP05) 
 Near Threatened   [common after summer rain; ephemeral]
Coongie (CHC06)Channel Country
 Near Threatened   [common after summer rain; ephemeral]
Lake Pure (CHC07) 
 Near Threatened   [common after summer rain; ephemeral]
Mann-Musgrave Block (CER01)Central Ranges
 Near Threatened   [common after summer rain; ephemeral]
Everard Block (CER03) 
 Near Threatened   [common after summer rain; ephemeral]
Tieyon (FIN03)Finke
 Near Threatened   [common after summer rain; ephemeral]
Pedirka (FIN04) 
 Near Threatened   [common after summer rain; ephemeral]
IBRA regions
DISPLAY ALL
4 of 8 subregionsGawlerNear Threatened
, Rare
2 of 4 subregionsGreat Victoria DesertNear Threatened
Strzelecki Desert (SSD05)Simpson Strzelecki DunefieldsNear Threatened
  [common after summer rain; ephemeral]
3 of 7 subregionsStony PlainsNear Threatened
2 of 4 subregionsChannel CountryNear Threatened
2 of 3 subregionsCentral RangesNear Threatened
2 of 2 subregionsFinkeNear Threatened
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 Bulbostylis]
Name derivation:
Bulbostylis from the Latin 'bulbus' meaning bulb and 'stylus' meaning style; alluding to the bulb-like style base. Barbata meaning bearded; referring to the bearded sheath on the stems.
Distribution:
Found scattered across the northern part of South Australia, in rock crevices, margins of watercourses, low-lying flats. Also found in Western Australia, Northern Territory, Queensland and New South Wales.
Status:
Native. Common in South Australia. Common in the other states.
Plant description:
Small annual sedge with filiform glabrous stems, to 20 cm high. Leaves almost capillary, usually much shorter than the stems, the sheaths prominently bearded. Inflorescence erect-spreading, light-brown spikelets.
Fruit type:
Brown heads.
Seed type:
Light brown three-sided triangular nut to 0.7 mm long and 0.5 mm wide, with fine tuberculate surface.
Embryo type:
Capitate.
Seed collecting:
Collect whole heads that are brown, containing hard seeds.
Seed cleaning:
Place the heads in a tray and leave to dry for one to two weeks. Then rub the heads with a rubber bung to dislodge the seeds. Use a sieve to separate any unwanted material. 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 95%.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA35600 (2.28 g)50+19-May-2007RJB71962
Lake Eyre
19-Sep-200895%+5°C, -18°C
BGA34000 (1.92 g)100+8-May-2011DJD2166
Lake Eyre
1-Jan-2012-18°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.