• Proposed
  • Under Assessment
  • NTPreliminary Assessed
  • 4Assessed
  • 5Published

Cuphophyllus adonis (Singer) Lodge & M.E. Sm.

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Scientific name
Cuphophyllus adonis
(Singer) Lodge & M.E. Sm.
Common names
IUCN Specialist Group
Mushroom, Bracket and Puffball
Assessment status
Preliminary Assessed
Preliminary Category
Proposed by
Matthew Smith
Giuliana Furci, Matthew Smith
Bryn Dentinger
Comments etc.
Janet Scott
Maria Alice Neves

Assessment Notes


This species appears to be uncommon, with an estimated population size of 5,000-10,000 mature individuals in small subpopulations of around 50 mature individuals. There is insufficient information to be able to estimate or infer a population decline throughout its distribution, but a slight decline is possible based on the threat of grazing, which appears to have a negative impact. It is therefore assessed as Near Threatened, nearly meeting VU C2a(i).

Taxonomic notes

The basionym for this species is Camarophyllus adonis Singer (Sydowia 6(1-4): 172 (1952)) but the species was also considered by many authors under the name Hygrocybe adonis (Singer) Boertm., (Biblthca Mycol. 192: 10 (2002)). The current accepted name for this species is Cuphophyllus adonis (Singer) Lodge & M.E. Sm. (in Lodge et al., Fungal Diversity 64: 80 (2013) [2014]).

Why suggested for a Global Red List Assessment?

This species is a showy and distinctive species that is easy to recognize. Although this species is found over a wide geographical area it is apparently rare and restricted to undisturbed Nothofagaceae forests.

Geographic range

This species is distributed in grasslands at forest edges from Tierra Del Fuego north to Puyehue Volcano. It is found in both Argentina and Chile.

Population and Trends

This appears to be an uncommon species. It is currently known from five widely spaced sites. Only one patch (genet) has been recorded at each site, but it is likely that there would be around five. Each genet represents 10 ramets, i.e. 50 mature individuals per site (where a site also represents a subpopulation). Therefore, we estimate 250 mature individuals in the currently known sites. This is a striking mushroom with high detectability, and its habitat requirements appear to be quite specific. It is therefore likely to occur in 20-40 times as many sites as currently known, i.e. a total population size of 5,000-10,000 mature individuals.

There is insufficient information to be able to estimate or infer a continuing decline in the number of mature individuals, but a slight decline is suspected based on the threat of grazing.

Population Trend: Decreasing

Habitat and Ecology

This species is found in minimally disturbed grasslands at forest edges and in wetland-grassland interfaces. However, this species is not found in areas with extensive logging or cattle grazing. This species is assumed to be a saprobe although it is possible that this species may act as a biotroph with plants.

Subantarctic ForestSubantarctic Grassland


Continued logging and cattle grazing in Patagonia are ongoing threats to this species. In common with other related species, it is likely that the nitrogen enrichment caused by the presence of grazing animals has a negative impact. Soil compaction by grazers may also have an effect.

Small-holder grazing, ranching or farmingUnintentional effects: subsistence/small scale (species being assessed is not the target) [harvest]

Conservation Actions

Conservation of natural, minimally disturbed grassland-forest and forest-wetland interfaces are required for the health of this species.

Resource & habitat protection

Research needed

More data are needed on the exact distribution of this species since there are relatively few published records. Understanding of the trophic mode may help to predict its sites of occurrence.

Population size, distribution & trendsLife history & ecology

Use and Trade

This species has no known human use.


Furci, G. (2018). Hongos de Chile, Volumen II. Fundcion Fungi. 1-315.

Lodge, D. J., Padamsee, M., Matheny, P. B., Aime, M. C., Cantrell, S. A., Boertmann, D., ... & Ainsworth, A. M. (2014). Molecular phylogeny, morphology, pigment chemistry and ecology in Hygrophoraceae (Agaricales). Fungal Diversity, 64(1), 1-99.

Singer, R. (1952). The agarics of the Argentine sector of Tierra del Fuego and limitrophous regions of the Magallanes area. I. White and pink spored groups. Sydowia, 6, 165-226.

Known distribution - countries

Regional Population and Trends

Country Trend Redlisted