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

Cantharellus quercophilus Buyck, D.P. Lewis, Eyssart. & V. Hofstetter

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Scientific name
Cantharellus quercophilus
Buyck, D.P. Lewis, Eyssart. & V. Hofstetter
Common names
IUCN Specialist Group
Mushroom, Bracket and Puffball
Assessment status
Preliminary Assessed
Preliminary Category
Proposed by
David Lewis
David Lewis
Anders Dahlberg, Gregory Mueller
Gregory Mueller

Assessment Notes

Data deficient due to not looking at herbaria specimens of Cantharellus

Taxonomic notes

Described by Buyck, Lewis, Eyssartier, & Hofstetter in 2010. Cantharellus quercophilus differs from typical C. cibarius like taxa by strong contrast between a pale hymenophore and the darker pileus and stipe.  Also it has a strong and rapid yellowing of the context when handled and a distinct purplish-lilac tinge of the sectional context.

Why suggested for a Global Red List Assessment?

It is a very rare species, only known from one location in Central Texas and associated with Post Oak (Quercus stellata).

Geographic range

Only known from a single site, near Caldwell, Burleson Co., Texas on property of Tamara Jackson.

Population and Trends

Lewis from 1980 to 1983, living in a Post oak area around College Station, Brazos Co., Texas did not see or collect this species.  Repeated visits to the holotype site in Burleson Co., Texas, since 2010, has not found other collections. Mycologists in Oklahoma collecting in similar habitats has not observed this species.

Population Trend:

Habitat and Ecology

Found in an open pasture with Post oak (Quercus stellata). It was found in summer months.

Temperate Shrubland


Cantharellus quercophilus is a mycorrhizal fungus species so it is dependent on living host trees for population viability. This mutually beneficial symbiotic association between fungus and plant host roots conveys numerous critical advantages for plant host survival. Mycorrhizal fungi are essentially the uptake organs for many nutrients i.e., nitrogen, phosphorus, numerous micronutrients, i.e., boron, selenium, copper, and plays a major role in uptake of water. Both the fungus and the plant host does not exist in nature without each other. Severe drought may impact populations due to tree mortality.  Another problem is the destruction of plants and soil by feral hogs and cattle grazing.

Small-holder grazing, ranching or farming

Conservation Actions

The property where the population is on private property and the owner is aware of its presence.  Lewis has made multiple trips there and found no other populations.

Resource & habitat protection

Research needed

Searching other Post oak sites to discover more about its ecology and distribution.  Ovrebo, in central Oklahoma, is surveying Post oak sites in that state.

Population size, distribution & trends

Use and Trade


Buyck. B., D. Lewis, G. Eyssartier, & V. Hofstetter.  2010.  Cantharellus quercophilus sp. nov. and its comparison to other small, yellow of brown American chanterelles. 
Cryptogamie Mycologie 31 (1):17-33.

Known distribution - countries

Regional Population and Trends

Country Trend Redlisted