Perennial grass to 50cm tall. Leaves with a hairless leaf sheath at the base. Ligule a membrane without a fringe of hairs. Leaves flat, rolled, or the edges rolled inwards, 15-20cm long, 2-3mm wide, surface rough, margins rough. Spikelets 9-11mm long, excluding the awn. Mature seed groups spreading. Seeds with one long awn. Endangered NSW. Protected NSW. Vulnerable SA. Vulnerable Vic.
PlantNET description with line drawings: http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Austrostipa~nullanulla
ausgrass2 description, photo, and line drawing: http://ausgrass2.myspecies.info/content/austrostipa-nullanulla
NSW Department of Environment & Heritage profile: http://www.environment.nsw.gov.au/threatenedspeciesapp/profile.aspx?id=10081