Rhizomatous, perennial, herb or (fern), 0.015-0.15 m high, aquatic or amphibious; leaflets 4, sporocarp with 2 equal blunt, basal teeth. Fl. Apr to Aug or Dec. Red clay, red loamy sand. In creeks and riverbeds, swamps, salt flats and claypans.
Beard’s Provinces: Eremaean Province, Northern Province, South-West Province.
IBRA Regions: Avon Wheatbelt, Carnarvon, Central Kimberley, Central Ranges, Coolgardie, Dampierland, Gascoyne, Geraldton Sandplains, Gibson Desert, Great Sandy Desert, Great Victoria Desert, Little Sandy Desert, Murchison, Northern Kimberley, Nullarbor, Ord Victoria Plain, Pilbara, Tanami, Victoria Bonaparte, Yalgoo.
IBRA Subregions: Ashburton, Augustus, Avon Wheatbelt P1, Avon Wheatbelt P2, Cape Range, Carnegie, Central, Central band, Nullarbor Plain, Chichester, Eastern Goldfield, Eastern Murchison, Eastern, Maralinga, Fitzroy Trough, Fortescue, Geraldton Hills, Hamersley, Lateritic Plain, Mackay, Mann-Musgrave Block, Mardabilla, Mitchell, Ord, Ord-Victoria Plains P1, Pentecost, Pindanland, Roebourne, Rudall, Shield, Tallering, Tanami P1, Victoria Bonaparte P1, Western Murchison, Wooramel.
IMCRA Regions: Kimberley, Ningaloo.
Local Government Areas (LGAs): Ashburton, Broome, Carnarvon, Derby-West Kimberley, Dundas, East Pilbara, Exmouth, Greater Geraldton, Halls Creek, Kalgoorlie-Boulder, Karratha, Laverton, Leonora, Meekatharra, Menzies, Murchison, Ngaanyatjarraku, Northampton, Port Hedland, Three Springs, Upper Gascoyne, Wickepin, Wiluna, Wyndham-East Kimberley, Yalgoo.
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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/