Introduced perennial grass to 92cm tall. Leaves with a hairy or hairless sheath at the base. Ligule a fringe of hairs. Leaves 4-30cm long, 1-4mm wide, flat, or the edges rolled inwards, often folded when dry, hairless. Spikelets 4-16mm long. Seeds with 0 bristles. Mature seed groups spreading.
PlantNET description with line drawings: http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Eragrostis~tenuifolia
ausgrass2 description with line drawings and photos: http://ausgrass2.myspecies.info/content/eragrostis-tenuifolia