Kath Alcock paintings: 3
Tricostularia from the Latin 'tres' meaning three and 'costula' meaning a little rib; referring to the 3-ribbed nut. Pauciflora from the Latin 'paucus' meaning few and 'florus' meaning flower; referring to the paucity of flowering.
Distribution and status
Found in the Fleurieu Peninsula and in the lower South-east in South Australia, growing in damp heath particularly in low lying swales and depressions with damp sands that would saturate in winter. Also found in New South Wales, Victoria and Tasmania. Native. Rare in South Australia. Rare in Tasmania. Common in the other states.
Herbarium regions: Southern Lofty, South Eastern
NRM regions: Adelaide and Mount Lofty Ranges, South East
AVH map: SA distribution map (external link)
Small tufted perennial sedge to 50 cm high yellow-green, wiry terete stems emerging from a basal clump. Flowers solitary or 2 or 3 in a terminal cluster. Flowering between December and February. Fruits are short red-brown spike at terminal of stems. Seeds are three-sided dark brown ovoid seed to 2.5 mm long and 1.5 mm wide with scattered hairs on the surface. Seed embryo type is capitate.
Seed collection and propagation
Collect seeds between November and March. Collect heads that are fat, turning brown and containing hard seeds. 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. From two collections, the seed viability were average to high, ranging from 70% to 100%.
|Location||No. of seeds|
1,000 (0.91 g)
|BGA||210 (0.48 g)||6||11-Dec-2009||Comaum NFR|
|BGA||480 (0.8 g)||10||18-Nov-2009||TST885|
|BGA||400 (0.35 g)||6||5-Nov-2014||DJD1477|
|Date||Result||T0||T50||Pre-treatment | Germination medium | Incubator: Photoperiod / Thermoperiod|
|Jul-16||0%||NA||NA||seed coat nicked with scalpel, 500 mg/L gibberellic acid + 10% smoke water 72 h;|
Incubated under spring/autumn conditions