A.M. Young (2005) Mycena rimosacuta Corner (1994) Porpolomopsis lewelliniae, commonly known as the mauve splitting wax-cap, is a gilled fungus of the waxcap family found in wet forests of eastern Australia and New Zealand.

The small mauve- or lilac-coloured mushrooms are fairly common and appear in moss or leaf litter on the forest floor in autumn, and are biotrophic.

[9] The mauve splitting waxcap is a small mushroom with an umbonate cap 3–6.5 centimetres (11⁄3–21⁄2 in) in diameter, initially conical and later flattening to almost flat.

[11] Fruiting bodies appear in autumn and winter (March to August) with some records from October, in moss or among leaf litter in wet sclerophyll forest or rainforest in temperate, subtropical or tropical climates.

[11] It has been recorded from southeastern Queensland, eastern New South Wales, Victoria and Tasmania, as well as New Zealand and from Mount Kinabalu in Sabah.