Seeds of South Australia
Triglochin turrifera (Juncaginaceae)
Rocket-fruit Arrowgrass
List of species for Triglochin
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Seed collecting:
September to November
Herbarium region:
South Eastern
NRM region:
South East
IBRA region
Tintinara (NCP04)Naracoorte Coastal Plain
 Vulnerable   (IUCN: VU D2)   [used to be known as turriferrum]
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 Triglochin]
Name derivation:
Triglochin from the Greek 'treis' meaning three and 'glochis' meaning a point; referring to its three-sided carpels. Turrifera from the Latin 'turris' meaning tower and the suffix '-fera' meaning bearing; referring to its tower or rocket-shaped fruit.
Found in the upper South-east in South Australia, growing on wet soils in small temporary streams, roadside pools, gilgais and depression on granite outcrops. Also found in New South Wales and Victoria.
Native. Very rare in South Australia. Uncommon in New South Wales. Common in Victoria.
Plant description:
Small annual herb to 14 cm high. Leaves flat and thread-like, to 14 cm long, usually longer than the inflorescence. Inflorescence an erect, ascending or spreading spike to 4.5 cm long, fruiting part at the top to 4 cm long, with 5–14 fruits. Flowering between July and September.
Fruit type:
Straw-coloured  6-sided rocket-shaped fruit to 5 mm long and 2 mm wide, stalkless or on very short stalk with 3 seed segments, all fertile and completely united and with 2 lateral thickened spurs to 1 mm long at the base.
Seed type:
Same as for the fruit.
Embryo type:
Seed collecting:
Collect mature fruits either by breaking off individual spikes or by removing plants that are drying off with fruits that are straw-colour and seed segments coming apart easily.
Seed cleaning:
Place the fruit spikes in a tray and leave to dry for 1 to 2 weeks. Then use you fingers to remove the dried fruit from the spikes. 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)
of plants
Collection number
Collection location
% ViabilityStorage
BGA1050 (2 g)50+21-Oct-2008DJD1353
South Eastern
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.