Spiny Mudgrass, Mud Grass
Perennial grass, prostrate, or to 1.25m tall when aquatic. Leaves alternating along the stems, with a sheath at the base. Ligule a membrane with a fringe of hairs. Leaves 0.5-12cm long, 1-7mm wide, linear, threadlike, flat, or folded and with the margins rolled in, hairless or rough. Spikelets green or purplish, becoming straw-coloured, 3-8mm long. Seeds with 0 bristles. Mature seed groups spreading.
Description and photo in G.M. Cunningham, WE Mulham, PL Milthorpe and J H Leigh (1981 and later printings) Plants of Western New South Wales page 136
PlantNET description with line drawings and photos of dried plants: http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Pseudoraphis~spinescens
ausgrass2 description with photos and line drawings: http://ausgrass2.myspecies.info/content/pseudoraphis-spinescens
Florabase photo: http://florabase.dec.wa.gov.au/browse/photo/590
Photo of plant. Photographer Harry Rose, NSW