Seeds of South Australia
Bulbostylis turbinata (Cyperaceae)
Top-shape Watergrass
List of species for Bulbostylis
Click on an image to enlarge it
Seed collecting:
April to June
Herbarium regions:
North Western, Lake Eyre
NRM regions:
Alinytjara Wilurara, South Australian Arid Lands
IBRA regions
Tallaringa (GVD05)Great Victoria Desert
 Rare   (IUCN: RA d(ii))
Oodnadatta (STP02)Stony Plains
 Rare   (IUCN: RA d(ii))
Murnpeowie (STP03) 
 Rare   (IUCN: RA d(ii))
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. Turbinata from Latin meaning top-shaped, referring to the shape of the seed.
Distribution:
Few records from the north and north-east parts of South Australia growing on loam, sand and clay soils along watercourses, in depressions and rockholes. Also found in Western Australia, Northern Territory and  Queensland.
Status:
Native. Rare in South Australia. Common in the other States.
Plant description:
Very slender annual sedge to 15 cm high, with filiform sometimes scabrous stems and leaves. Leaf blades shorter than the stems; the sheaths usually bearded at the orifice but sparsely so. Inflorescence umbellate, with a few slender rays longer than the bracts, rarely reduced to a single spikelet. Flowering between February and April.
Fruit type:
Brown heads.
Seed type:
Yellow or red three-sided triangular nut to 1.1 mm long and 0.9 mm wide, with fine reticulate surface.
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 100%.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
8800 (0.79 g)
8800 (0.79 g)
17-May-2007RJB72100
North Western
1-Aug-2007100%+5°C, -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.