Seeds of South Australia
Juncus procerus (Juncaceae)
Tall Rush
List of species for Juncus
Display more images
Click on an image to enlarge it
Seed collecting:
December to April
Herbarium region:
South Eastern
NRM region:
South East
IBRA regions
Mount Gambier (SVP02)Southern Volcanic Plain
 Rare   (IUCN: RA d(i,ii))
Glenelg Plain (NCP02)Naracoorte Coastal Plain
 Rare   (IUCN: RA d(i,ii))
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. Procerus from Latin meaning high, tall or long; referring to its habit.
Found in the lower South-east in South Australia, growing in or at the edge of permanent or seasonal wet areas such as swamps, dams and roadside swales. Also found in New South Wales, Victoria and Tasmania (and New Zealand, Chile). 
Native. Rare in South Australia. Uncommon in New South Wales. Common in the other states.
Plant description:
Densely tufted robust perennial sedge with horizontal or ascending rhizomes. Stems arising from a rhizome, thick, soft, to 2 m high and 8 mm diameter, yellow-green, with an interrupted pith and fine striations. Leaves reduced to long broad brown basal sheaths. Inflorescence diffuse compact lateral panicle to 13 cm long with loosely clustered brownish flowers. Flowering between October to February.
Fruit type:
Clusters of golden brown ellipsoid capsules with numerous seeds.
Seed type:
Tiny orange slightly curved ovoid seed to 0.6 mm long and 0.3 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 one collection, the seed viability was high, at 100%.
Seeds stored:
LocationNo. of seeds
(weight grams)
of plants
Collection number
Collection location
% ViabilityStorage
340000 (4.2 g)
340000 (4.2 g)
South Eastern
1-Aug-2006100%+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.