• Proposed
  • 2Under Assessment
  • 3Preliminary Assessed
  • 4Assessed
  • 5Published

Skeletocutis roseola (Rick ex Theiss.) Rajchenb.

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Scientific name
Skeletocutis roseola
(Rick ex Theiss.) Rajchenb.
Common names
IUCN Specialist Group
Mushroom, Bracket and Puffball
Assessment status
Proposed by
MIND.Funga Initiative
Kelmer Martins da Cunha
Comments etc.
MIND.Funga Initiative

Assessment Notes

Taxonomic notes

Skeletocutis roseola (Rick ex Theiszen) Rajchenberg, 1987 (≡ Polystictus roseolus Rick ex Theiszen, 1911).

Why suggested for a Global Red List Assessment?

Skeletocutis roseola is a rare wood-decaying polypore. It occurs in the Atlantic Forest domain of Brazil, a very threatened domain and a hotspot for conservation.
The species is assessed as Vulnerable (VU) C2a(ii).

Geographic range

Skeletocutis roseola is currently known from the Southern and Southeastern Atlantic Forest domain in Brazil, in São Paulo, Santa Catarina and Rio Grande do Sul states. The species is expected to occur throughout the Southern and Southeastern Atlantic Forest of Brazil.

Population and Trends

Skeletocutis roseola is currently known from 9 sites and 20 collections in the Atlantic Forest in Southern and Southeast Brazil, in São Paulo, Santa Catarina and Rio Grande do Sul states. The few records in over 100 years since its description suggest that the species is rare, even in intensively surveyed areas.  It is expected that the species occur throughout the southern and southeastern Atlantic Forest domain of Brazil, which is now mainly composed by fragments and secondary forests, with only 28% of its original area remaining (Tabarelli et al. 2010, Rezende et al. 2018). There are an estimated 800 sites, each one with up to 10 mature individuals. Total population is estimated at no more than 8000 mature individuals. The population is undergoing continuing decline, and is expected to further decline in the future.

Population Trend: Decreasing

Habitat and Ecology

Skeletocutis roseola is lignicolous, growing on angiosperm trees,causing a white rot on dead wood. The species occurs throughout the southern and southeastern Atlantic Forest, in the Araucaria Moist Forests and in the coastal Atlantic Forest, as well as Montane Cloud Forests associated with these formations.

Subtropical/Tropical Moist Lowland ForestSubtropical/Tropical Moist Montane Forest


Skeletocutis roseola occurs in the Atlantic Forest of Brazil, regarded as biodiversity Hotspots for conservation priorities due to its high diversity, endemism rates and habitat loss (Myers et al. 2000). This phytogeographical domain is estimated to have only 28% of its vegetation remaining, being fragmented and composed mainly by secondary forests (Tabarelli et al. 2010, Rezende et al. 2018). According to Pinto et al. (2006), the Atlantic Forest is found in this situation due to predatory exploitation of the resources and other human actions, like territorial occupation. Over 60% of the Brazilian population lives in the Atlantic Forest, mainly in coastal areas, where the country’s largest cities are located (Rezende et al. 2018). Other threats to the Atlantic Forest include increase in fire frequency and intensity, introduction of exotic and invasive species and the connection between these factors (Brooks & Balmford 1996, Tabarelli et al. 2006, Pinto et al. 2006). Also, reduction and ‘savannization’ of Atlantic Forest is expected due to climate change in the next decades (Salazar et al. 2007).

Housing & urban areasCommercial & industrial areasAgro-industry farmingAgro-industry plantationsAgro-industry grazing, ranching or farmingIncrease in fire frequency/intensityHabitat shifting & alteration

Conservation Actions

The main actions to prevent the decline of the species are the protection of its habitat by the implementation of Protected Areas and enforcement of public policies to recover secondary forests.

Site/area protection

Research needed

More research is needed to understand and confirm the real species distribution and its ecology.

Population size, distribution & trendsLife history & ecology

Use and Trade

None known.


Brooks, T., Balmford, A. Atlantic forest extinctions. Nature 380, 115 (1996). https://doi.org/10.1038/380115a0
FUNDAÇÃO SOS MATA ATL NTICA (São Paulo). Atlas dos Remanescentes Florestais da Mata Atlântica: Período 2017-2018. 2018. ed. São Paulo: Arcplan, 2018. 35 p.
Joly, C. A., Metzger, J. P., & Tabarelli, M. (2014). Experiences from the Brazilian Atlantic Forest: ecological findings and conservation initiatives. New Phytologist, 204(3), 459–473. doi:10.1111/nph.12989
Motato-Vásquez, Viviana & Matheus Pires, Ricardo & Gugliotta, Adriana. (2014). Polypores from an Atlantic rainforest area in southeast Brazil: pileate species. Revista Brasileira de Botânica. 36. 10.1007/s40415-014-0109-7.
Myers, N., R. A. Mittermeier, C. G. Mittermeier, G. A. B. Fonseca & J. Kent. 2000. Biodiversity hotspots for conservation priorities. Nature 403: 853-858.
Pinto, Luiz & Bede, Lucio & Paese, Adriana & Fonseca, Mônica & Paglia, Adriano & Lamas, Ivana. (2006). Mata Atlântica brasileira: Os desafios para a conservação da biodiversidade de um hotspot mundial..
Rajchenberg, M. (1987), Type studies of Polyporaceae (Aphyllophorales) described by J. Rick. Nordic Journal of Botany, 7: 553-568. doi:10.1111/j.1756-1051.1987.tb02023.x
Reck, Mateus Arduvino; Silveira, Rosa Mara Borges da. Polyporales (Basidiomycota) no Parque Estadual de Itapuã, Viamão, Rio Grande do Sul1. Revista Brasileira de Biociências, Rio Grande do Sul, v. 6, n. 3, p. 301-314, 24 abr. 2018. Trimestral.
Rezende CL, Scarano FR, Assad ED, Joly CA, Metzger JP, Strassburg BBN, Tabarelli M, Fonseca GA, Mittermeier RA (2018) From hotspot to hopespot: An opportunity for the Brazilian Atlantic Forest. Perspectives in Ecology and Conservation. Perspectives in Ecology and Conservation 16(4): 208-214.
Salazar LF, Nobre CA, Oyama MD (2007) Climate change consequences on the biome distribution in tropical South America. Geophysical Research Letters 34(9).
Tabarelli, Marcelo & Aguiar, Antonio & Grillo, A & Santos, A. (2006). Fragmentação e Perda de Habitats na Mata Atlântica ao Norte do Rio São Francisco.
Tabarelli, M., Aguiar, A. V., Ribeiro, M. C., Metzger, J. P., & Peres, C. A. (2010) Prospects for biodiversity conservation in the Atlantic Forest: Lessons from aging human-modified landscapes. Biological Conservation, 143(10), 2328–2340. doi:10.1016/j.biocon.2010.02.005
Westphalen, Mauro Carpes, Reck, Mateus Arduvino, & Silveira, Rosa Mara Borges da. (2010). Polypores from Morro Santana, Rio Grande do Sul, Brazil. Hoehnea, 37(3), 647-662. https://doi.org/10.1590/S2236-89062010000300010
Westphalen, Mauro Carpes, & Silveira, Rosa Mara Borges da. (2013). Pileate polypores from Araucaria Forests in Southern Brazil. Hoehnea, 40(1), 77-86. https://doi.org/10.1590/S2236-89062013000100003

Known distribution - countries

Regional Population and Trends

Country Trend Redlisted