The broad leaves suggest Stylidium armeria, but the obvious midrib suggests Stylidium graminifolium. An interesting plant. See Rosemary Purdi’s comments in sighting 1948241. Just type the number into the Search field. Someone with a collecting permit should take this to the herbarium.
Stylidium montanum grows in clusters. It likes peaty subalpine to alpine soils. In Namadgi this would mean at high altitude. Comment please, Christine.
Hello Betty, I have used an app to try to determine the altitude at that spot, and it says 1,045m. I do not know how accurate that is, and I do not think that that would be considered alpine. The soil there appears rather reddish. I will add another pic to show that there were about three of them in a kind of cluster, and I think there was another one not far away.