The views of the upper sides don’t convey much information since there are a number of genera which produce fruit bodies with this appearance. However, I found your stump yesterday afternoon and this morning I collected some herbarium specimens, checked the microscopic details and at this sighting (https://canberra.naturemapr.org/Community/Sightings/Details/3402388?CommentSuccess=true#Comments) I’ve supplied views of upper and lower surfaces.