Seeds of South Australia
Juncus pallidus (Juncaceae)
Pale Rush
List of species for Juncus
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Seed collecting:
January to April
Herbarium regions:
Eyre Peninsula, Murray, Southern Lofty, Kangaroo Island, South Eastern
NRM regions:
Adelaide and Mount Lofty Ranges, Eyre Peninsula, Kangaroo Island, South Australian Murray-Darling Basin, South East
IBRA regions
SUMMARY
Mount Gambier (SVP02)Southern Volcanic Plain
 Least Concern
Bridgewater (NCP01)Naracoorte Coastal Plain
 Rare   (IUCN: RA d(i,ii))   [could be declining; edge of range]
Glenelg Plain (NCP02) 
 Least Concern
Lucindale (NCP03) 
 Least Concern
Tintinara (NCP04) 
 Rare   (IUCN: RA d(ii))   [edge of range]
Kangaroo Island (KAN01)Kanmantoo
 Least Concern
Fleurieu (KAN02) 
 Least Concern
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Least Concern
Eyre Hills (EYB03)Eyre Yorke Block
 Rare   (IUCN: RA d(ii))   [needs rain]
Murray Mallee (MDD02)Murray Darling Depression
 Rare   (IUCN: RA d(i,ii))   (Probable Decline)   [edge of range]
Murray Lakes and Coorong (MDD03) 
 Rare   (IUCN: RA d(i,ii))   [likes red gum; edge of range]
Lowan Mallee (MDD04) 
 Least Concern   (Probable Decline)
Wimmera (MDD05) 
 Near Threatened
IBRA regions
DISPLAY ALL
Mount Gambier (SVP02)Southern Volcanic PlainLeast Concern
4 of 4 subregionsNaracoorte Coastal PlainLeast Concern
, Rare
2 of 2 subregionsKanmantooLeast Concern
Mount Lofty Ranges (FLB01)Flinders Lofty BlockLeast Concern
Eyre Hills (EYB03)Eyre Yorke BlockRare
  (IUCN: RA d(ii))   [needs rain]
4 of 6 subregionsMurray Darling DepressionLeast Concern
, Near Threatened
, Rare
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 Juncus]
Name derivation:
Juncus from the Latin 'jungere' meaning to tie or bind; referring to the use of the rushes for weaving and basketry. Pallidus from Latin meaning pale; referring to its pale stems.
Distribution:
Found on the southern Eyre Peninsula, Kangaroo Island, southern Mount Lofty Ranges and the South-east in South Australia, growing in seasonally damp places.
Status:
Native. Common in South Australia. Common in the other states.
Plant description:
Tall, strongly rhizomatous perennial rush with stout stems to 2 m high and 8 mm diameter, pale-green, with moderately dense, continuous pith and numerous fine striations. Leaves reduced to long broad basal sheaths, dark-brown below, pale above. Inflorescence scattered or occasionally clustered heads with many pale brown flowers. Flowering between December and February.
Fruit type:
Clusters of golden brown ovoid capsules with numerous seeds.
Seed type:
Tiny orange ovoid seed to 0.7 mm long and 0.3 mm wide, with fine reticulated surface.
Embryo type:
Broad.
Seed collecting:
Collect fruits either by picking off the mature heads, those turning brown and come-off easily or break-off the whole spikes.
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 brown 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.
Seed viability:
From one collection, the seed viability was high, at 95%.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA7700 (0.36 g)10-Jan-2007RJB71076
Southern Lofty
1-Aug-200795%-18°C
Location: BGA — the seeds are stored at the Adelaide Botanic Gardens, MSB — the seeds are stored at the Millennium Seed Bank, Kew, England.
Number of plants: This is the number of plants from which the seeds were collected.
Collection location: The Herbarium of South Australia's region name.
% Viability: Percentage of filled healthy seeds determined by a cut test or x-ray.