Seeds of South Australia
Marsilea costulifera (Marsileaceae)
Narrow-leaf Nardoo
List of species for Marsilea
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Seed collecting:
October to August
Herbarium regions:
Lake Eyre, Gairdner-Torrens, Flinders Ranges, Northern Lofty, Murray, Kangaroo Island, South Eastern
NRM regions:
Kangaroo Island, Northern and Yorke, South Australian Arid Lands, South Australian Murray-Darling Basin, South East
IBRA regions
Kangaroo Island (KAN01)Kanmantoo
 Vulnerable   (IUCN: VU D2)
Fleurieu (KAN02) 
 Vulnerable   (IUCN: VU D2)   [in Myponga; lack of records]
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Vulnerable   (IUCN: VU D2)   [requires fresh water; lack of records]
Broughton (FLB02) 
 Endangered   (IUCN: EN B2ab(i,ii,iii))   (Probable Decline)
Northern Flinders (FLB05) 
 Vulnerable   (IUCN: VU B2ab(i,ii,iii); D2)   (Probable Decline)   [limited habitat; climate sensitive, changed hydrology, goats - threats]
Central Flinders (FLB06) 
 Vulnerable   (IUCN: VU B2ab(i,ii,iii); D2)   (Probable Decline)   [limited habitat; in Wilpena; climate sensitive, changed hydrology, goats - threats]
Eyre Hills (EYB03)Eyre Yorke Block
 Rare   (IUCN: RA d(ii))
South Olary Plain (MDD01)Murray Darling Depression
 Rare   (IUCN: RA d(ii))   [popn fluctuates with rainfall]
Murray Mallee (MDD02) 
 Rare   (IUCN: RA d(i,ii))   (Probable Decline)   [edge of range; poorly collected]
Wimmera (MDD05) 
 Vulnerable   (IUCN: VU B2ab(i,ii,iii))   (Probable Decline)
Murray Scroll Belt (RIV06)Riverina
 Near Threatened   (Probable Decline)   [appears after floods; does not tolerate salinity]
Gawler Volcanics (GAW02)Gawler
 Rare   (IUCN: RA d(ii))
Arcoona Plateau (GAW04) 
 Rare   (IUCN: RA d(ii))
Bimbowrie (BHC05)Broken Hill Complex
 Rare   (IUCN: RA d(i,ii))   (Probable Decline)   [stock on dams]
Oodnadatta (STP02)Stony Plains
 Rare   (IUCN: RA d(i,ii))
Murnpeowie (STP03) 
 Rare   (IUCN: RA d(i,ii))
Witjira (STP06) 
 Rare   (IUCN: RA d(i,ii))
Baltana (STP07) 
 Rare   (IUCN: RA d(i,ii))
Sturt Stony Desert (CHC02)Channel Country
 Rare   (IUCN: RA d(i,ii))   [limited habitat]
Coongie (CHC06) 
 Near Threatened
IBRA regions
2 of 2 subregionsKanmantooVulnerable
4 of 6 subregionsFlinders Lofty BlockVulnerable
, Endangered
Eyre Hills (EYB03)Eyre Yorke BlockRare
  (IUCN: RA d(ii))
3 of 6 subregionsMurray Darling DepressionRare
, Vulnerable
Murray Scroll Belt (RIV06)RiverinaNear Threatened
  (Probable Decline)   [appears after floods; does not tolerate salinity]
2 of 8 subregionsGawlerRare
Bimbowrie (BHC05)Broken Hill ComplexRare
  (IUCN: RA d(i,ii))   (Probable Decline)   [stock on dams]
4 of 7 subregionsStony PlainsRare
2 of 4 subregionsChannel CountryNear 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 Marsilea]
Name derivation:
Marsila named after Count Luigi Ferdiando Masili (1658-1730), an Italian scholar and eminent natural scientist, whose name was Latinised as Marsilius. Costulifera from the Latin 'costula' diminative of rib and 'ferens' meaning carrying or bearing; referring to its distinctive small ribs on the sporocarps.
Found across South Ausralia, growing in mud on the edges of swamps, billabongs and shallow depression. Also found in all mainland states.
Native. Uncommon in South Australia. Uncommon in Western Australia and the Northern Territory. Common in the other states.
Plant description:
Rhizome glabrous herb except at tips, slender, becoming woody. Fronds clustered at nodes with the four leaflets unequally arranged, oblanceolate to narrowly cuneate, to 12 mm long and 8 mm broad, surfaces sparsely hairy or glabrous, margin straight to slightly rounded, entire.
Fruit type:
Brown bean-shaped pod (Sporocarp) to 4 mm, slightly ribbed, densely hairy, clustered together on stalk shorter than pod.
Seed type:
Fine spores.