Rhizomatous, dioecious, submerged, marine or estuarine perennial, herb. Fl. Aug to Dec or Jan to Apr. White sand, mud. Tidal pools, reefs and inter-tidal areas.
Beard’s Provinces: Eremaean Province, Northern Province, South-West Province.
IBRA Regions: Carnarvon, Dampierland, Pilbara, Swan Coastal Plain, Yalgoo.
IBRA Subregions: Cape Range, Edel, Perth, Pindanland, Roebourne.
IMCRA Regions: Abrolhos Islands, Canning, Central West Coast, Kimberley, Leeuwin-Naturaliste, Ningaloo, Pilbara (nearshore), Pilbara (offshore), WA South Coast, Zuytdorp.
Local Government Areas (LGAs): Ashburton, Broome, Carnarvon, Cockburn, Esperance, Exmouth, Irwin, Joondalup, Karratha, Northampton, Rockingham, Shark Bay.
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