Leucopaxillus eucalyptorum (Leucopaxillus eucalyptorum)

The fruit body is a mushroom with a cap atop a stem. The caps may grow to over 10 centimetres in diameter (but mature fruit bodies may be only half that) and are, in broad terms, gently rounded to flat. They are drab coloured in shades of buff to pale greyish brown and blotches, resembling water stains, may be present. The caps are dry and smooth to faintly velvety. The gills are white as is the stem, which may grow to 10 centimetres in length and 2 in diameter but often is smaller.

There is neither a partial veil nor a universal veil. Around the base of the stem you find white mycelium, mixed with earth or debris. 

Spore print: white.

The mushrooms appear on soil in a variety of habitats with native vegetation. Usually they appear in groups, either as scattered individuals or in small clusters of abutting mushrooms. Given the colours, the mushrooms can hide quite well amongst fallen eucalypt leaves and twig litter. Even large caps, especially when isolated, can be overlooked.

This is a native species that was first described in 1931, as Clitocybe eucalyptorum, based on material collected in South Australia.

Drab colours, no veils, no scaliness, no striking shape .... This is a rather dull species with almost nothing in the way of visual features. Nevertheless there is a 'Leucopaxillus look' (namely a chunky mushroom, generally in drab colours, neither veil, white gills, white spore print, dense white mycelium around the base of the stem) which can let you make an educated guess of genus in the field. However, a definite identification needs a look at a couple of microscopic features.