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
SUMMARY
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
DISPLAY ALL
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.
Distribution:
Found across South Ausralia, growing in mud on the edges of swamps, billabongs and shallow depression. Also found in all mainland states.
Status:
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.