Seeds of South Australia
Deyeuxia quadriseta (Gramineae)
Reed Bent-grass
List of species for Deyeuxia
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Seed collecting:
December to July
Herbarium regions:
Flinders Ranges, Eyre Peninsula, Murray, Southern Lofty, Kangaroo Island, South Eastern
NRM regions:
Adelaide and Mount Lofty Ranges, Eyre Peninsula, Kangaroo Island, South Australian Arid Lands, South Australian Murray-Darling Basin, South East
IBRA regions
Mount Gambier (SVP02)Southern Volcanic Plain
 Near Threatened
Bridgewater (NCP01)Naracoorte Coastal Plain
 Rare   (IUCN: RA d(ii))   (Probable Decline)
Glenelg Plain (NCP02) 
 Near Threatened
Lucindale (NCP03) 
 Near Threatened
Kangaroo Island (KAN01)Kanmantoo
 Near Threatened
Fleurieu (KAN02) 
 Least Concern
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Least Concern
Broughton (FLB02) 
 Rare   (IUCN: RA d(i,ii))
Southern Flinders (FLB04) 
 Rare   (IUCN: RA d(i,ii))
Central Flinders (FLB06) 
 Endangered   (IUCN: EN B2ab(i,ii,iii))   (Probable Decline)   [northern edge of range; highly localised, occurs on peaks; weeds a threat]
Eyre Hills (EYB03)Eyre Yorke Block
 Critically Endangered   (IUCN: CR B2ab(i,ii,iii,iv))   (Definite Decline)   [degraded habitat, no recent records]
Lowan Mallee (MDD04)Murray Darling Depression
 Vulnerable   (IUCN: VU D2)
Wimmera (MDD05) 
 Rare   (IUCN: RA d(ii))   (Probable Decline)   [marginal habitat]
IBRA regions
Mount Gambier (SVP02)Southern Volcanic PlainNear Threatened
3 of 4 subregionsNaracoorte Coastal PlainNear Threatened
, Rare
2 of 2 subregionsKanmantooLeast Concern
, Near Threatened
4 of 6 subregionsFlinders Lofty BlockLeast Concern
, Rare
, Endangered
Eyre Hills (EYB03)Eyre Yorke BlockCritically Endangered
  (IUCN: CR B2ab(i,ii,iii,iv))   (Definite Decline)   [degraded habitat, no recent records]
2 of 6 subregionsMurray Darling DepressionRare
, Vulnerable
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 Deyeuxia]
Name derivation:
Deyeuxia named after Nicolas Deyeux (1753-1837), a Professor at the School of Pharmacy and Faculty of Medicine, Paris. Quadriseta from Latin meaning four bristles; 
Found in southern  South Australia, from Port Augusta to the lower South-east growing in moist areas, by creeks and in swamps. Also found in Western Australia, New South Wales, Victoria and Tasmania.
Native. Common in South Australia. Common in the other States.
Plant description:
Glabrous perennial grass to 1m high with rigid stems having glabrous nodes. Leaves stiff, flat or finally inrolled; ligule long, truncate, glabrous. Flower-spike a dense cylindrical panicle, sometimes slightly branched to 15 cm long; glumes narrow, acute, subequal 4.5-5 mm long, the lower one slightly longer; lemma shorter, usually minutely scabrous; 4-nerved and with 4 teeth, of which 2 are often longer; awn almost basal, c. 5.5 mm long, shortly exserted beyond the glumes; tufts about half as long as the lemma; bristle absent. Flowering between October and May.
Fruit type:
Golden-brown compact long fruit-spike.
Seed type:
Brown grain to 2 mm long and 0.5 mm wide.
Embryo type:
Seed collecting:
Use hands to gently strip seeds off the mature seed spike that are turning straw colour. Mature seeds will come off easily. Alternatively, you can break off the whole seed spike.
Seed cleaning:
Place the seeds/spike in a tray and leave to dry for two weeks. No further cleaning is required if only seed collected. If seed spikes collected, use hand to strip off the mature seeds. 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.