Rhizomatous, perennial, herb or (fern), 0.01-0.1 m high, aquatic or amphibious; leaflets 4, sporocarp with 2 unequal basal teeth, lower one longer, recurved. Grey alluvial soil or clay. In shallow fresh water, or in mud near temporary waterholes.
Beard’s Provinces: Eremaean Province.
IBRA Regions: Carnarvon, Central Ranges, Gascoyne, Gibson Desert, Great Sandy Desert, Little Sandy Desert, Pilbara.
IBRA Subregions: Cape Range, Carnegie, Chichester, Fortescue, Hamersley, Lateritic Plain, Mackay, Mann-Musgrave Block, Roebourne, Rudall, Trainor.
Local Government Areas (LGAs): Ashburton, East Pilbara, Karratha, Ngaanyatjarraku, Port Hedland, Wiluna.
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Western Australian Herbarium (1998–). FloraBase—the Western Australian Flora. Department of Biodiversity, Conservation and Attractions. https://florabase.dpaw.wa.gov.au/