Rigid Panic, Coolah Grass
Perennial grass to 1m tall. Leaves with a hairless or slightly rough sheath at the base. Ligule a lacerated membrane without a fringe of hairs. Leaves 2-20cm long, 2-7mm wide, flat or the margins rolled in, hairless to slightly rough. Spikelets greenish turning purple, 3-4mm long. Seeds with 0 bristles. Mature seed groups spreading.
Description and photo (as Panicum prolutum) in G.M. Cunningham, WE Mulham, PL Milthorpe and J H Leigh (1981 and later printings) Plants of Western New South Wales page 121
eFloraSA fact sheet (as Panicum prolutum): http://www.flora.sa.gov.au/cgi-bin/speciesfacts_display.cgi?form=speciesfacts&name=Panicum_prolutum
ausgrass2 description with line drawings and photos: http://ausgrass2.myspecies.info/content/walwhalleya-proluta