The main photo shows a group of mature fruitbodies and the white spots show where the spines have fallen off (see the species' description: https://canberra.naturemapr.org/species/47094). Photo 2 gives a closer view of the apical hole and the pockmarked surface that I mention in that description. Each white 'pockmark' is bounded by a brown line, composed of the very low and more persistent warts. In Photo 3 the spines are fairly obvious on these immature fruitbodies and there's a closer view in Photo 4. Photo 5 shows cross-sections of a mature and an immature fruitbody. The 'foam-packaging' base is clear in the mature fruitbody. If you draw a line between the tips of the arrows, what's on the left would become the spore-producing area in the mature fruitbody. By this stage the fruitbody is no longer homogenous internally, there already being a difference in texture between the tissues to the left and the right of that line.