Lepidosperma sieberi has long been confused with Lepidosperma concavum, with the latter now largely confined to coastal areas of the Sydney Basin, with one outlying record from the Jervis Bay area.
More southerly records are presumed to identify as L. sieberi.
L. concavum is a more robust plant.
Lepidosperma concavum is listed in the following regions:
Maps
Booderee National Park Budawang National Park Bugong National Park Cambewarra Range Nature Reserve Colymea State Conservation Area Conjola Bushcare Jerrawangala National Park Jervis Bay National Park Kangaroo River Nature Reserve Meroo National Park Morton National Park Murramarang National Park Narrawallee Creek Nature Reserve Parma Creek Nature Reserve Ulladulla Wildflower Reserve Wairo Beach and Dolphin PointPlaces
Jerrawangala, NSW