Sweet Swamp-grass, Forde Poa
Perennial grass to 2m tall. Leaves mostly at the base of the plant, with a rough to hairless sheath at the base. Ligule a membrane without a fringe of hairs. Leaves flat or folded together lengthwise, 5-30cm long, 1-5mm wide, rough or hairless, usually with slightly rough edges, with a long fine point. Spikelets greenish or straw-coloured, 5-13mm long. Seeds with 0 bristles. Mature seed groups cylindrical to spreading.
Description in G.M. Cunningham, WE Mulham, PL Milthorpe and J H Leigh (1981 and later printings) Plants of Western New South Wales page 134
PlantNET description with line drawings: http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Poa~fordeana
ausgrass2 description with line drawings and photos: http://ausgrass2.myspecies.info/content/poa-fordeana