Kath Alcock paintings: 2
Machaerina from the Latin 'machaera' meaning a bent dagger or sword, and the feminine diminutive suffix '-ina", referring to the shape of the leaves of some species (formally Baumea named after Antoine Baume (1728 - 1804), a French chemist and inventor). Arthrophylla from the Greek 'arthron' meaning joint and 'phyllon' meaning leaf.
Distribution and status
Found mainly in the southern part of South Australia from the Gammon Ranges, with isolated distribution in hot springs further north, growing mainly in swamps. Also found in all other States. Native. Common in South Australia. Rare in Northern Territory and Queensland. Common in all other States.
Herbarium regions: Lake Eyre, Flinders Ranges, Eyre Peninsula, Northern Lofty, Murray, Southern Lofty, Kangaroo Island, South Eastern, Green Adelaide
NRM regions: Adelaide and Mount Lofty Ranges, Eyre Peninsula, Kangaroo Island, South Australian Arid Lands, South Australian Murray-Darling Basin, South East
AVH map: SA distribution map (external link)
Perennial sedge with stems to 2 m high, slender, subterete or compressed, indistinctly septate with one stem leaf with a short lamina or reduced almost to the sheath. Inflorescence a spike to 25 cm long with brown spikelets. Flowering between September and March. Fruits are large brown fruit heads at the tip of stems. Seeds are light brown, woody ellipsoid nut to 4 mm long and 2 mm wide. Seed embryo type is capitate.
Seed collection and propagation
Collect seeds between November and May. Collect whole heads that are brown, containing dark hard seeds. Not all heads will contain 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. Seed viability is variable depending on maturity of seeds when collected. This species is generally difficult to germinate, it has morphophysiological dormancy and complex germination requirements.
|Location||No. of seeds|
2,300 (1.37 g)
|BGA||13,700 (12.68 g)||100+||12-Mar-2010||TST923|