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

Skeletocutis nothofagi Rajchenb.

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Scientific name
Skeletocutis nothofagi
Common names
IUCN Specialist Group
Mushroom, Bracket and Puffball
Assessment status
Preliminary Assessed
Preliminary Category
Proposed by
Mario Rajchenberg
Mario Rajchenberg
Comments etc.
Anders Dahlberg

Assessment Notes

Possibly DD

Taxonomic notes

Rajchenberg (2001, 2006)

Why suggested for a Global Red List Assessment?

A wood decay polypore known from a single collection fruiting on fallen branches of Nothofagus betuloides (Nothofagaceae) in Tierra del Fuego. Never found on continental Patagonia in Argentina or Chile fruiting on other Nothofagus species; this possibly shows a restricted host specificity, rare fruiting possibility and/or restricted area distribution which requires appropriate protection. Surveys in Chile have never recovered this species.

D1 VU due to low number of specimens

Geographic range

Tierra del Fuego Is., Argentina, where the host covers a narrow coastal area. Purported to be present on Chilean side and perhaps continental Chile following the host, but never found yet. Possible host restriction due to the fact that has never been found on other host in continental Patagonia in Argentina where polypore flora has been intensively surveyed in the past 25 years.

Population and Trends

A rare species with few occurrences, likely to be find in Chile but rare, not found after several surveys conducted.

Population Trend: Uncertain

Habitat and Ecology

A saprophyte decaying the wood of fallen branches of Nothofagus betuloides.


Highly restricted distribution.
Not found though other species that were originally described from Tierra del Fuego such as Inonotus crustosus (Speg.) J.E. Wright & J.R. Deschamps were widely found in continental Patagonia in the last 2 decades on other Nothofagus hosts following intensive surveys and field trips.

Conservation Actions

No conservation action is currently in place. Need of bettter documentation of its distribution.

Research needed

Mycological surveys in southern Chile in order to check its presence, Nothofagus betuloides being more widely distributed in that country.

Use and Trade


Rajchenberg M. 2001. A new species and new records of polypore fungi from the Patagonian Andes forests of Argentina. Mycotaxon 77: 93-100. Mycotaxon Ltd. ISSN 0093-4666.
Rajchenberg M: 2006. Polypores (Basidiomycetes) from the Patagonian Andes Forests of Argentina. Bibliotheca Mycologica Band 201, J. Cramer Verlag, Stuttgart. ISBN 978-3-443-59103-8. ISSN 0067-8066. 300 pp., pp. 270-273

Country occurrence

Regional Population and Trends

Country Trend Redlisted