I'm wondering if this is a Laccaria species? This looks older and they tend to change the form of the cap as they age. They are very common around Albury/Wodonga, especially in revegetation areas
In Lichenomphalia the fruit body produced by the fungal partner in the lichen is a mushroom that appears on soil. The stems may be up to about 2 centimetres long and the gills run down the stem a little. In this lichen the fruit body is the dominant feature and the associated algal cells appear as a green mat on the soil surface. That mat need be nothing more than a sparse green wash on the soil.