Lepidosperma concavum (Sandhill Sword-sedge)

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.