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

Geomorium gamundiae Kraisit., Pfister, Mujic, Healy & M.E. Sm.

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Scientific name
Geomorium gamundiae
Kraisit., Pfister, Mujic, Healy & M.E. Sm.
Common names
IUCN Specialist Group
Cup-fungi, Truffles and Allies
Incertae sedis
Assessment status
Proposed by
Camille Truong
Comments etc.
Camille Truong

Assessment Notes

Taxonomic notes

Kraisitudomsook et al. (2020) examined a specimen from the Farlow Herbarium (FH-00284257, near Concepción, Chile, 1906) that was morphologically similar to G. gamundiae, but with different spore dimensions and ornaments. This variability suggests that further collecting in the northern ranges of Nothofagaceae in South America may reveal additional new truffle-like species.

Why suggested for a Global Red List Assessment?

This hypogeous ectomycorrhizal species is strictly associated with Nothofagus and is only known from three localities in the Rio Negro province in Argentina.

Geographic range

Geomorium gamudiae has a restricted distribution in the Nahuel Huapi National Park and surroundings (Rio Negro province in Argentina).

Population and Trends

So far Geomorium gamundiae is only known from three localities in Nothofagus forest from the Nahuel Huapi National Park and surroundings (Rio Negro province). This hypogeous species may be easily overlooked but so far, the collections seem to indicate that it has a restricted distribution. The scattered collections over the years (2001, 2012, 2017) seems to indicate that the populations are able to maintain in the area.

Population Trend: Stable

Habitat and Ecology

This ectomycorrhizal species associates exclusively with Nothofagus species in Patagonia. So far it has been found in association with Nothofagus pumilio and Nothofagus dombeyi.

Subantarctic Forest


This species is associated with an increasingly threatened Nothofagus forest. Deforestation and forest fires (intentional and accidental due to drought and climate change) are a growing threat.

Increase in fire frequency/intensityHabitat shifting & alteration

Conservation Actions

One of the known localities of Geomorium gamundiae lies within the protected area of the Nahuel Huapi National Park.

Site/area protection

Research needed

Little is known about the biology of the species (fruiting patterns) as well as its ecology (habitat requirement, host specificity) and functions for his Nothofagus host. Its current distribution and population number needs further research to find out whether the species is overlooked or the distribution truly limited

Population size, distribution & trendsLife history & ecology

Use and Trade

No use or trade are known so far.


Kraisitudomsook, N., Healy, R. A., Pfister, D. H., Truong, C., & Nouhra, E. (2020). Resurrecting the genus Geomorium : Systematic study of fungi in the genera Underwoodia and Gymnohydnotrya ( Pezizales ) with the description of three new South American species. Persoonia 44, 98–112.

Known distribution - countries

Regional Population and Trends

Country Trend Redlisted