Seeds of South Australia
Juncus amabilis (Juncaceae)
Beautiful Rush
List of species for Juncus
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Seed collecting:
February to April
Herbarium regions:
Southern Lofty, South Eastern
NRM regions:
Adelaide and Mount Lofty Ranges, South East
IBRA regions
Bridgewater (NCP01)Naracoorte Coastal Plain
 Vulnerable   (IUCN: VU D2)
Glenelg Plain (NCP02) 
 Vulnerable   (IUCN: VU D2)
Lucindale (NCP03) 
 Vulnerable   (IUCN: VU D2)
Fleurieu (KAN02)Kanmantoo
 Endangered   (IUCN: EN D)   [opposite Glen Shera Swamp - has been searched for, probably extinct]
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Vulnerable   (IUCN: VU B2ab(i,ii,iii); D2)   (Probable Decline)   [restricted range; willows, weeds & spraying - threats]
Lowan Mallee (MDD04)Murray Darling Depression
 Endangered   (IUCN: EN B2ab(i,ii,iii))   (Probable Decline)
Wimmera (MDD05) 
 Vulnerable   (IUCN: VU D2)
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. Amabilis from Latin meaning beautiful, worthy of love, pleasing; unsure of how this is related to the species.
Found in the southern Mount Lofty Ranges and the South-east in South Australia, growing damp sites. Also found in Western Australia, New South Wales, Victoria and Tasmania.
Native. Rare in South Australia. Uncommon in Western Australia and Tasmania. Common in the other states.
Plant description:
Densely tufted perennial rush arising from a rhizome with greyish-green stems to 120 cm high and 2.3 mm diameter, easily compressed, pith interrupted pith with large air-spaces. Inflorescence in 1 to many sub-globular clusters with many pale brown flowers. Flowering between December and February.
Fruit type:
Clusters of golden brown ellipsoid capsules with numerous seeds.
Seed type:
Tiny orange ovoid seed to 0.4 mm long and 0.2 mm wide, with fine reticulated surface.
Embryo type:
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 three collections, the seed viability were high, ranging from 90% to 100%.
Seeds stored:
LocationNo. of seeds
(weight grams)
of plants
Collection number
Collection location
% ViabilityStorage
165000+163214 (4.62+4.57 g)
325,000 (9.11 g)
22-Feb-2005DJD 117
Southern Lofty
28-Mar-200695%+5°C, -18°C
BGA138000 (1.218 g)30+9-Feb-2009DJD1491
Southern Lofty
BGA390000 (4.41 g)15+14-Apr-2010KHB400
Southern Lofty
1-Jan-201290%+5°C, -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.