Saw-sedge
This grass like plant can be found along tracks and creeks in tropical rainforests of the east coast. The long blades are saw-edged and can do considerable damage if you ever get caught in one. They have bright red, black, brown or grey coloured seeds which can be pounded and ground to produce a rough kind of flour.
Saw Sedge was amongst the foods enjoyed by the Ngaruk willum people who inhabited the eastern side of Port Phillip Bay around Brighton and Mordialloc in Victoria. They also ate tubers of Water Ribbons, the fruits of Sticky Boobialla and the berries and leaves of Honey Pots.