Seeds of South Australia
Luzula densiflora (Juncaceae)
Dense Wood-rush
List of species for Luzula
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Seed collecting:
October to January
Herbarium regions:
Flinders Ranges, Eyre Peninsula, Southern Lofty, Kangaroo Island, South Eastern
NRM regions:
Adelaide and Mount Lofty Ranges, Eyre Peninsula, Kangaroo Island, South Australian Arid Lands, South East
IBRA regions
Mount Gambier (SVP02)Southern Volcanic Plain
 Near Threatened
Bridgewater (NCP01)Naracoorte Coastal Plain
 Vulnerable   (IUCN: VU B2ab(i,ii,iii))   (Probable Decline)
Glenelg Plain (NCP02) 
 Near Threatened
Lucindale (NCP03) 
 Rare   (IUCN: RA d(ii))
Tintinara (NCP04) 
 Vulnerable   (IUCN: VU B2ab(i,ii,iii); D2)   (Probable Decline)
Kangaroo Island (KAN01)Kanmantoo
 Vulnerable   (IUCN: VU D2)   [very hard to find; roadworks a threat]
Fleurieu (KAN02) 
 Rare   (IUCN: RA d(ii))   (Probable Decline)   [small pops; blackberries a threat]
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Rare   (IUCN: RA d(ii))   (Probable Decline)   [small pops; blackberries a threat]
Talia (EYB04)Eyre Yorke Block
 Endangered   (IUCN: EN D)
Murray Lakes and Coorong (MDD03)Murray Darling Depression
 Vulnerable   (IUCN: VU B2ab(i,ii,iii))   (Probable Decline)   [not ideal habitat]
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 Luzula]
Name derivation:
Luzula possibly from the Italian 'luzziola' meaning sparkle or a fire-fly or from the Latin 'luxulae 'meaning light; probably alluding to the sparkling and quivering character of the heads when wet with dew. Densiflora from Latin for densely flowered; referring to its clusters of dense inflorescence.
Distribution:
Found on the southern Eyre Peninsula, Kangaroo Island, southern Mount Lofty Ranges and the South-east in South Australia, growing in moist rather shady sites, on clay, in eucalypt woodland or open grassland. Also found in New South Wales, Victoria and Tasmania.
Status:
Native. Rare in South Australia. Common in the other states.
Plant description:
Loosely tufted perennial sedge with flowering stems 40 cm high, generally exceeding leaves and with a bulbous or swollen base. Leaves flat, to 3 mm wide with densely hairy margins and an obtuse and thickened apex. Inflorescence dense clusters with many pale to reddish brown flowers at the end of a long stalk. Flowering between July and November.
Fruit type:
Dense clusters of reddish-brown fruiting spike.
Seed type:
Brown ellipsoid seed to 0.9 mm long and 0.8 mm wide, with a large white fleshy appendage at one end.
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 two collections, the seed viability were high, at 100%.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
3500 (1.09 g)
3500 (1.09 g)
50+20-Oct-2006DJD610
Southern Lofty
1-Aug-2007100%-18°C
BGA4800 (1.42 g)40+14-Nov-2007DJD941
Southern Lofty
19-Sep-2008100%+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.