Common Wheatgrass, Rough Wheatgrass
Perennial grass to 1.2m tall. Leaves mostly basal, with a sheath at the base. Ligule a membrane without a fringe of hairs. Leaves 5-40cm long, 2-5mm wide, flat, rolled inwards, or threadlike; upper surface glaucous and hairless, or rough, lower surface hairless or hairy; with rough edges, and tapering to a fine point. Spikelets 15-35mm long, excluding the awns. Seeds with 1 long awn. Mature seed groups cylindrical to spreading. Anthosachne scabra in SA.
Description and photo of seeding plant (as Agropyron scabrum) in G.M. Cunningham, WE Mulham, PL Milthorpe and J H Leigh (1981 and later printings) Plants of Western New South Wales pages 51-52
PlantNET description: http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Elymus~scaber
ausgrass2 description, photos, and line drawings (as Anthosachne scabra): http://ausgrass2.myspecies.info/content/anthosachne-scabra