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

Hyphodontia crassispora Gresl. & Rajchenb.

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Scientific name
Hyphodontia crassispora
Gresl. & Rajchenb.
Common names
IUCN Specialist Group
Mushroom, Bracket and Puffball
Assessment status
Proposed by
Alina Greslebin
Comments etc.
Alina Greslebin

Assessment Notes

Taxonomic notes

This species is characterized by its odontioid basidiome growing on decayed wood of Nothofagus betuloides and Drymis winteri. Microscopically in characterized by two types of cystidia (capitate with resinous cap and leptocystidia) and thick walled spores.

Why suggested for a Global Red List Assessment?

This species, as far as it is known, is a corticioid fungi with a very narrow geographical distribution. It has been recorded in only one locality in Tierra del Fuego Island, even though the island has been surveyed extensively.

B1 VU: this criterium applies because it has been recorded in only one locality in Tierra del Fuego . Forest that potentially can harbor this species (Nothofagus betuloides) occupy <5000 km2, but the actual surface of forest suitable for this species is much less since it has been recorded in very humid and pristine forests of mixed Nothofagus betuloides-Drymis winteri forets that are restricted to the southern area of the island.
B2 EN: this criterium applies because it known occupancy area is < 500 km2, and in only one locality (B2a).
A3 C VU: Human impacts in the area, especially tourism, are expected to increase in the future.

Geographic range

Recorded in only one locality: Estancia Moat, Ushuaia, Tierra del Fuego, Argentina. Although extensively surveyed, this species was not found in other Nothofagus forests of Tierra del Fuego island.
Not found neither in continental pure or mixed Nothofagus forests (Chubut and Rio Negro).

Population and Trends

Population Trend: unknown. The species is known from less than 10 specimens and has been recorded in only one locality.
Presumably decreasing.

Population Trend: Uncertain

Habitat and Ecology

Growing on Nothofagus betuloides and Drymis winterin in pristine and humid Nothofagus Subantarctic Forest.

Temperate Forest


Human disturbance in the extremely restricted distributional area of this species.

Tourism & recreation areasUnintentional effects: subsistence/small scale (species being assessed is not the target) [harvest]Recreational activities

Conservation Actions

Habitat protection in the distributional area.

Site/area protectionResource & habitat protection

Research needed

Geographic distribution and abundance needs to be assessed to know the actual distribution.  Knowledge on factors affecting its limited distribution will be very valuable.

Population size, distribution & trends

Use and Trade


Greslebin, A. G. y M. Rajchenberg. 2000. The genus Hyphodontia in the Patagonian Andes forests of Argentina. Mycologia 92: 1155-1165.

Known distribution - countries

Regional Population and Trends

Country Trend Redlisted