Seeds of South Australia
Cladium procerum (Cyperaceae)
Leafy Twig-rush
List of species for Cladium
Click on an image to enlarge it
Seed collecting:
January to April
Herbarium regions:
Flinders Ranges, Northern Lofty, Murray, Southern Lofty, South Eastern
NRM regions:
Adelaide and Mount Lofty Ranges, Northern and Yorke, South Australian Arid Lands, South Australian Murray-Darling Basin, South East
IBRA regions
Mount Gambier (SVP02)Southern Volcanic Plain
 Vulnerable   (IUCN: VU B2ab(i,ii,iii))   (Probable Decline)   [water dependent]
Bridgewater (NCP01)Naracoorte Coastal Plain
 Vulnerable   (IUCN: VU D2)   [water dependent]
Glenelg Plain (NCP02) 
 Vulnerable   (IUCN: VU B2ab(i,ii,iii))   (Probable Decline)   [water dependent]
Lucindale (NCP03) 
 Vulnerable   (IUCN: VU B2ab(i,ii,iii))   (Probable Decline)   [water dependent]
Fleurieu (KAN02)Kanmantoo
 Rare   (IUCN: RA d(ii))   [could be stable; limited habitat; needs fresh water/wet]
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Rare   (IUCN: RA d(ii))   [needs fresh water/wet]
Southern Flinders (FLB04) 
 Rare   (IUCN: RA ab)   (Definite Decline)
Northern Flinders (FLB05) 
 Endangered   (IUCN: EN D)   [northern limit; highly localised; Moro Gorge: climate sensitive]
Talia (EYB04)Eyre Yorke Block
 Vulnerable   (IUCN: VU D1)   (Probable Decline)   [needs fresh water, highly localised]
Murray Lakes and Coorong (MDD03)Murray Darling Depression
 Vulnerable   (IUCN: VU B2ab(i,ii,iii))   (Probable Decline)   [water dependent]
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 Cladium]
Name derivation:
Cladium from the Greek 'clados' meaning a branchlet; referring to the panicles. Procerum from the Latin 'procerus' meaning high, tall or long.
Distribution:
Found in the northern and southern Flinders Ranges, southern Mount Lofty Ranges and the lower South-east in South Australia, growing in coastal swamps and margins of creeks. Also found in all mainland states.
Status:
Native. Rare in South Australia. Rare in Western Australia, Northern Territory and Victoria. Common in the other states.
Plant description:
Big rhizomatous perennials sedge, forming big clumps. Leaves with blade to 2.5 m long and 20 mm wide with yellow-brown sheath. Flower-spike big, interrupted-oblong in outline to 35 cm long and 9 cm diameter with  red-brown glumes.
Fruit type:
Large red-brown fruiting spike.
Seed type:
Brown ellipsoid to ovoid nut to 2 mm long and 1 mm wide, with a smooth surface.
Embryo type:
Capitate.
Seed collecting:
Collect heads that are dying off, turning brown and containing hard seeds.
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. 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 four collections, the seed viability were average to high, ranging from 65% to 90%.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
33400 (60.15 g)
33400 (60.15 g)
100+14-Feb-2006DJD385
South Eastern
28-Jul-200670%+5°C, -18°C
BGA2500 (4.79 g)319-Apr-2007DJD796
Southern Lofty
1-Aug-200785%+5°C, -18°C
BGA4300 (7.8 g)313-Apr-2007Willowdene - River Angas
Southern Lofty
1-Aug-200765%+5°C, -18°C
BGA6000 (10.86 g)228-Jan-2010KHB363
Flinders Ranges
Jun-201090%-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.