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

Aureoboletus flaviporus (Earle) Klofac

Go to another Suggested Species...

Scientific name
Aureoboletus flaviporus
(Earle) Klofac
Common names
IUCN Specialist Group
Mushroom, Bracket and Puffball
Assessment status
Proposed by
Noah Siegel
Comments etc.
Noah Siegel

Assessment Notes

Taxonomic notes

Described as Boletus flaviporus (Earle 1905), where it remained until it was transferred to the genus Aureoboletus (Klofac 2010).

Why suggested for a Global Red List Assessment?

Aureoboletus flaviporus is a common bolete, commonly occurring in California, USA, with its preferred ectomycorrhizal partner, Coast Live Oak. Also occasionally with other oak species around the Central Valley in California, and north into Oregon.
Population is widespread, and no decline has been observed. We recommend it should be listed as Least Concern (LC).

Geographic range

Common from the San Francisco Bay Area in California, USA, south to Baja California, Mexico. Scattered populations do occur north into Oregon, USA. Mostly in coast and coast range forests, occasionally in the oak zone on the east side of the Central Valley of California.

Population and Trends

Population is widespread, and shows no sign of decline.

Population Trend: Stable

Habitat and Ecology

Ectomycorrhizal with oaks (Quercus spp.), especially Coast Live Oak (Quercus agrifolia). Typically in stands of oak with thick duff, or duff buildup, without a grassy or weedy under story. Fruiting from fall into spring.


Loss of habitat due to urban sprawl, and stand replacing fires. But probably not at a scale to affect the overall population.

Conservation Actions

None needed.

Research needed

None needed.

Use and Trade

This species is edible, and occasionally collected for food.


Earle, F.S. (1905). Mycological Studies II. Bull. N. Y. Bot. Gard. 3(5): 289-463.

iNaturalist. 2020. http://www.inaturalist.org

Klofac W. (2010). Die Gattung Aureoboletus, ein weltweiter Überblick. Ein Beitrag zu einer monographischen Bearbeitung. Osterreichische Zeitschrift fur Pilzkunde 19: 133–174.

Siegel, N. and Schwarz, C. 2016. Mushrooms of the Redwood Coast. Ten Speed Press: Berkeley, CA. 601 p.

Wood, M.G. and Stevens, F.A. 2020. MykoWeb; California Fungi. https://www.mykoweb.com/CAF/species/Aureoboletus_flaviporus.html

Country occurrence

Regional Population and Trends

Country Trend Redlisted