Seeds of South Australia
Triglochin longicarpa (Juncaginaceae)
Long-fruited Arrowgrass
List of species for Triglochin
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Seed collecting:
September to November
Herbarium regions:
North Western, Eyre Peninsula
NRM region:
Eyre Peninsula
IBRA regions
Eyre Hills (EYB03)Eyre Yorke Block
 Data Deficient   [new species]
Eyre Mallee (EYB05) 
 Data Deficient   [new species]
Gawler Volcanics (GAW02)Gawler
 Data Deficient   [new species]
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. Longiarpa from the Latin 'longus' meaning long and 'carpos' meaning fruit; referring to its long fruits. 
Distribution:
Found on the Eyre Peninsula in South Australia, growing in damp sand loam and clay, often in saline soils near the edges of salt lakes and claypans. Also found in Western Australia and Victoria.
Status:
Native. Rare in South Australia. Rare in Victoria. Common in Western Australia.
Plant description:
Slender annual herb to 13 cm high. Leaves flat and tread-like, to 5.5 cm long, shorter than or as long as the inflorescence. Inflorescence erect or ascending, to 5.0 cm long, fruiting part at the top to 6.5 cm long with 6–54 fruits. Flowering between August to October.
Fruit type:
Straw-coloured narrowly cylindric, slightly expanded at base, fruit to 5.8 mm long and 0.5 mm wide on a very short stalk with six seed segments (carpels), 3 fertile alternating with 3 underdeveloped sterile ones.
Seed type:
Straw-coloured narrow wedge-shaped seed with 2 minute downward incurved points to 0.1 mm long at the base, that do not extend beyond the segment outline.
Embryo type:
Linear.
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 rub the dried fruit spikes 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.