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

Protogautieria substriata Thiers

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Scientific name
Protogautieria substriata
Common names
IUCN Specialist Group
Mushroom, Bracket and Puffball
Assessment status
Proposed by
Noah Siegel
Comments etc.
Noah Siegel

Assessment Notes

Taxonomic notes

Described by Thiers (1979), from a collection made at Huntington Lake, in Sierra National Forest. Placement in Gomphaceae is assumed. Although it superficially resembles Gautieria (which reside in Gomphaceae), no DNA sequences exist for Protogautieria substriata confirming family.

Why suggested for a Global Red List Assessment?

Protogautieria substriata is a rare species; currently known from seven collections from four locations. Occurs in high elevation forests, under fir (Abies magnifica and A. concolor), and Lodgepole Pine (Pinus contorta ssp. murrayana) in the Sierra Nevada Mountains of California, USA.

Geographic range

Currently known from four sites in the Sierra Nevada in California, USA. Suitable habitat continues into the southern Cascade mountains of California.

Population and Trends

Known from seven collections, from four locations, this species hasn’t been collected in over twenty years. Too little is known about this species to assess its population status or trends.

Population Trend: Uncertain

Habitat and Ecology

Hypogeous, solitary or scattered, buried in duff or soil. Known from subalpine forest, in association (likely ectomycorrhizal) with Pinaceae, especially under fir (Abies magnifica and A. concolor), and Lodgepole Pine (Pinus contorta ssp. murrayana). Collections have been made in spring and fall; it is likely to fruit through summer if conditions are favorable. This species is dependent on mycophagy (primarily eaten by small mammals) for spore dispersal.

Temperate Forest


Prolonged droughts and decades of fire suppression have drastically altered the high Sierra Nevada forests, leading to thicker, denser, Abies dominated forests. As a result, hotter, stand replacing fires (rather than patchwork and understory burns) are commonplace, altering appropriate habitat drastically, and making it ill-suited for this species.

Increase in fire frequency/intensityDroughts

Conservation Actions

This species should be added to United States Forest Service sensitive species list.

Identify potential habitat, and managed it for fungi.

Site/area protectionSite/area managementPolicies and regulations

Research needed

Targeted surveys for presence or absents of this species in potential habitat.

Family placement, based on phylogenetics.

TaxonomyPopulation size, distribution & trends

Use and Trade

None known


Thiers, H.D. 1979. New and interesting hypogeous and secotioid fungi from California. Beihefte zur Sydowia 8: 381–390.

Trappe, J.M., Molina, R., Luoma, D.L., Cázares, E., Pilz, D., Smith, J.E., Castellano, M.A., Miller, S.L. and Trappe, M.J. 2009. Diversity, Ecology, and Conservation of Truffle Fungi in Forests of the Pacific Northwest. United States Department of Agriculture. Forest Service. Pacific Northwest Research Station. General Technical Report. PNW-GTR-772.

Country occurrence

Regional Population and Trends

Country Trend Redlisted