Seeds of South Australia
Cyperus victoriensis (Cyperaceae)
Flat Sedge
List of species for Cyperus
Click on an image to enlarge it
Seed collecting:
October to February
Herbarium regions:
North Western, Lake Eyre, Gairdner-Torrens, Flinders Ranges, Murray
NRM regions:
Alinytjara Wilurara, South Australian Arid Lands, South Australian Murray-Darling Basin
IBRA regions
SUMMARY
Southern Flinders (FLB04)Flinders Lofty Block
 Critically Endangered   (IUCN: CR D)   (Definite Decline)   [~3 plants]
Central Flinders (FLB06) 
 Rare   (IUCN: RA d(ii))   [southern edge of range]
Murray Mallee (MDD02)Murray Darling Depression
 Rare   (IUCN: RA d(i,ii))   [appears after floods]
Murray Scroll Belt (RIV06)Riverina
 Rare   (IUCN: RA d(ii))   [appears after floods]
Arcoona Plateau (GAW04)Gawler
 Rare   (IUCN: RA d(ii))   [southern limit]
Kingoonya (GAW05) 
 Rare   (IUCN: RA d(ii))   [southern limit]
Roxby (GAW07) 
 Rare   (IUCN: RA d(ii))
Tallaringa (GVD05)Great Victoria Desert
 Rare   (IUCN: RA d(ii))
Warriner (SSD04)Simpson Strzelecki Dunefields
 Least Concern
Strzelecki Desert (SSD05) 
 Near Threatened
Breakaways (STP01)Stony Plains
 Rare   (IUCN: RA d(ii))
Oodnadatta (STP02) 
 Least Concern
Murnpeowie (STP03) 
 Least Concern
Macumba (STP05) 
 Least Concern
Witjira (STP06) 
 Least Concern
Baltana (STP07) 
 Least Concern
Sturt Stony Desert (CHC02)Channel Country
 Least Concern
Diamantina-Eyre (CHC04) 
 Near Threatened
Coongie (CHC06) 
 Least Concern
Lake Pure (CHC07) 
 Least Concern
Mann-Musgrave Block (CER01)Central Ranges
 Near Threatened
Tieyon (FIN03)Finke
 Near Threatened
Pedirka (FIN04) 
 Near Threatened
IBRA regions
DISPLAY ALL
2 of 6 subregionsFlinders Lofty BlockRare
, Critically Endangered
Murray Mallee (MDD02)Murray Darling DepressionRare
  (IUCN: RA d(i,ii))   [appears after floods]
Murray Scroll Belt (RIV06)RiverinaRare
  (IUCN: RA d(ii))   [appears after floods]
3 of 8 subregionsGawlerRare
Tallaringa (GVD05)Great Victoria DesertRare
  (IUCN: RA d(ii))
2 of 4 subregionsSimpson Strzelecki DunefieldsLeast Concern
, Near Threatened
6 of 7 subregionsStony PlainsLeast Concern
, Rare
4 of 4 subregionsChannel CountryLeast Concern
, Near Threatened
Mann-Musgrave Block (CER01)Central RangesNear Threatened
2 of 2 subregionsFinkeNear Threatened
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 Cyperus]
Name derivation:
Cyperus from the Latin 'cyperos' and derived from the Greek 'kypeiros', an ancient Greek name used by Homer and Theophrastus for several plants of this genus. Victoriensis refers to where the type specimen was collected, from the Murray River in Victoria.
Distribution:
Found in the north-eastern part of South Australia, north of the Murray River to the Northern Territory and Queensland borders. Also found in all mainland states.
Status:
Native Common in South Australia. Rare in Western Australia. Uncommon in Victoria. Common in the other states.
Plant description:
Perennial sedge to 80 cm high, producing slender rhizomes bearing ellipsoid fibrous-coated tubers which give rise to new stems. Stems relatively slender, somewhat trigonous at the top, the remainder cylindrical, the base thickened. Leaves few, narrow, much shorter than the stems. Bracts at least 2 or 3, the lowest usually longer than the inflorescence and often suberect. Inflorescence umbel lax, often thrown to one side, usually simple, of few very slender rays, spikelets fairly close together but not clustered, usually 3-8 to each ray, spreading, rich-brown to pallid, linear, to 3 cm long and 2 mm wide, many-flowered. Flowering between August and December.
Fruit type:
Brown fruit clusters at top of stems.
Seed type:
Black long triangular seed to 2 mm long and 0.8 mm wide, with a reticulate surface.
Embryo type:
Capitate.
Seed collecting:
Collect fruits either by picking off the mature heads, those turning brown and come-off easily or breaking off whole heads.
Seed cleaning:
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. Be careful, as the seeds are very small. Seeds are yellowish ovoid and hard. 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.