Themeda triandra

https://www.anbg.gov.au/aborig.s.e.aust/themeda-triandra.html

Kangaroo Grass was gathered in wooden bowls. The seeds were separated and grinding stones were used to produce flour which was mixed with water and cooked to make damper.

https://en.wikipedia.org/wiki/Themeda_triandra

NSW grasses archive

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&ved=2ahUKEwiP3eS8wI3zAhVaVH0KHfquAVsQFnoECA0QAw&url=http%3A%2F%2Farchive.lls.nsw.gov.au%2F__data%2Fassets%2Fpdf_file%2F0004%2F495814%2Farchive-grasses.pdf&usg=AOvVaw0lxee20PG7NyZ3fyq5NWzM