These were on a fallen eucalypt branch. In the bulk of the third photo you see numerous brown spores in part of a fruit body that has been squashed (in potassium hydroxide) under a cover slip. Below on the left is part of an ascus still with immature spores. To its right are three mature spores, showing the two sets of cross walls (roughly at right angles to each other) that divide each spore into a number of cells.