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Aureoboletus flaviporus (Earle) Klofac

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Scientific name
Aureoboletus flaviporus
(Earle) Klofac
Common names
IUCN Specialist Group
Mushroom, Bracket and Puffball
Assessment status
Assessment date
IUCN Red List Category
Siegel, N.
Mueller, G.M.

Assessment Notes

The content on this page is fetched from The IUCN Red List of Threatened Species: https://www.iucnredlist.org/species/195923402/195927900


Aureoboletus flaviporus is a common bolete in California, USA, in association with its preferred ectomycorrhizal partner Coast Live Oak. It is also found occasionally with other oak species around the Central Valley in California; north into Oregon; and south in Baja California, Mexico. The population is widespread, and no decline has been observed despite several localized threats having been identified. It is assessed as Least Concern (LC).

Taxonomic notes

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

Geographic range

This species is common from the San Francisco Bay Area in California, USA, south to Baja California, Mexico. Scattered subpopulations do occur north into Oregon, USA. Mostly it can be found in coast and coast range forests, occasionally in the oak zone on the east side of the Central Valley of California.

Population and Trends

The population is widespread, and shows no sign of decline.

Population Trend: stable

Habitat and Ecology

It is ectomycorrhizal with oaks (Quercus spp.), especially Coast Live Oak (Quercus agrifolia). Typically it is found in stands of oak with thick duff, or duff buildup, without a grassy or weedy understory. Fruiting occurs from fall into spring.


Loss of habitat due to urban sprawl, drought stress in southern California, and stand-replacing fires are all threats, but probably not at a scale to affect the overall population.

Conservation Actions

No specific conservation actions are needed with regards to this species, and no specific research is needed either with regards to this species.

Use and Trade

This species is edible, and occasionally collected for food.

Source and Citation

Siegel, N. 2021. Aureoboletus flaviporus. The IUCN Red List of Threatened Species 2021: e.T195923402A195927900. https://dx.doi.org/10.2305/IUCN.UK.2021-2.RLTS.T195923402A195927900.en .Accessed on 1 October 2023

Country occurrence