Porpolomopsis lewelliniae

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Porpolomopsis lewelliniae
Humidicutis lewelliniae 1 smaller.jpg
P. lewelliniae
Hazelbrook, New South Wales
Scientific classification
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Hygrophoraceae
Genus: Porpolomopsis
Species: P. lewelliniae
Binomial name
Porpolomopsis lewelliniae
(Kalchbr.) Lodge, Padamsee & S.A. Cantrell (2013)

Hygrophorus lewellinae Kalchbr. (1883)
Hygrocybe lewellinae (Kalchbr.) A. M. Young (1997)
Humidicutis lewelliniae (Kalchbr.) A.M. Young (2005) Mycena rimosacuta Corner (1994)

Porpolomopsis lewelliniae
View the Mycomorphbox template that generates the following list
Mycological characteristics
gills on hymenium
cap is umbonate
hymenium is adnexed
stipe is bare
spore print is white
ecology is saprotrophic
edibility: unknown

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. The key distinguishing feature is the splitting of the cap dividing down the middle of the individual gills.


It was initially described as Hygrophorus lewelliniae by Hungarian mycologist Károly Kalchbrenner in 1882,[5] and later as Hygrocybe lewelliniae by Brittlebank in 1940, before being placed in the genus Humidicutis by Australian mycologist Tony Young in 1997.[6] A molecular phylogenetics study found it to be more closely related to the type species of the genus Porpolomopsis, Porpolomopsis calyptriformis so it was transferred to Porpolomopsis.[2] The original holotype specimen had been collected on 14 June 1880 in the vicinity of Western Port in Victoria by a Miss M.R. Lewellin and sent by Ferdinand von Mueller to Kalchbrenner in Budapest. It was likely destroyed in the First World War,[7] although a watercolour of it by the collector survives and is located in the National Herbarium of Victoria. It has been compared with collections made by E. J. H. Corner of a Mycena rimosacuta in Borneo and found to be the same species.[4] It may be that Humidicutis mavis is merely a white-coloured form of this species.[8]


The mauve splitting waxcap is a small mushroom with an umbonate cap 3–6.5 centimetres (1⅓–2½ in) in diameter, initially conical and later flattening to almost flat. It is smooth and mauve or lilac in colour with a greyish boss. The cap is textured with radial fibres, along which it may split, with the gills dividing between the split. The lilac stipe is 3–7 cm (1⅓–2½ in) high and 0.4–0.8 cm thick and may be tinged yellow at the base. The lilac gills are adnexed or free, and thick or distant with even margins. The spore print is white and the hyaline spores are more or less oval, measuring around 5.5 x 9 μm.[9]

Distribution and habitat[edit]

Saprotrophic, this species is fairly common.[10] 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. It also appears in sandy areas.[10] 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. Although not recorded from North Queensland, it is predicted to occur there.[9]


  1. ^ "Humidicutis lewelliniae". MycoBank. International Mycological Association. Retrieved 2015-10-24. 
  2. ^ a b Lodge DJ; et al. (2014). "Molecular phylogeny, morphology, pigment chemistry and ecology in Hygrophoraceae (Agaricales)". Fungal Diversity. 64 (1): 1–99. doi:10.1007/s13225-013-0259-0.  open access publication – free to read
  3. ^ "Mycena rimosacuta". MycoBank. International Mycological Association. Retrieved 2015-10-24. 
  4. ^ a b Young AM (2002). "Australasian Hygrocybe species in Indonesia". Mycologist. 16 (3): 110–111. doi:10.1017/S0269-915X(02)00302-6. 
  5. ^ Kalchbrenner, K (1882). "Definitions of some new Australian fungi". Proceedings of the Linnean Society of New South Wales. 7: 104–06. 
  6. ^ Young AM, Wood AE (1997). "Studies on the Hygrophoraceae (Fungi, Homobasidiomycetes, Agaricales) of Australia". Australian Systematic Botany. 10 (6): 911–1030. doi:10.1071/SB96005. 
  7. ^ Young, p. 9
  8. ^ Young, p. 44
  9. ^ a b Young, p. 42
  10. ^ a b Grey P (2005). Fungi Down Under:the Fungimap Guide to Australian Fungi. Melbourne: Royal Botanic Gardens. p. 41. ISBN 0-646-44674-6. 

Cited text[edit]

  • Young, A.M. (2005). Fungi of Australia: Hygrophoraceae. (Australian Biological Resources Study) CSIRO, Canberra, ACT. ISBN 0-643-09195-5.