- Proposed
- 2Under Assessment
- 3Preliminary Assessed
- 4Assessed
- 5Published
Boletus fibrillosus Thiers
- Scientific name
- Boletus fibrillosus
- Author
- Thiers
- Common names
- IUCN Specialist Group
Mushroom, Bracket and Puffball- Kingdom
- Fungi
- Phylum
- Basidiomycota
- Class
- Agaricomycetes
- Order
- Boletales
- Family
- Boletaceae
- Assessment status
- Proposed
- Proposed by
- Noah Siegel
- Comments etc.
- Noah Siegel
Assessment Notes
Taxonomic notes
Described by Thiers (1975), based on a Type collection made in Mendocino County, California, USA.
Why suggested for a Global Red List Assessment?
Boletus fibrillosus is a common bolete in northern California and the Pacific Northwest (in both coastal and montane forests), and occasional in the Sierra Nevada on California, and the northern Rocky Mountains.
This species is edible, and is often collected for food; no sign of decline has been noted due to picking.
Population is widespread, and no decline has been observed. We recommend it should be listed as Least Concern (LC).
Geographic range
From southern British Columbia, Canada, throughout the forested parts of the Pacific Northwest, east into the northern Rocky Mountains; south to San Francisco, California, USA in coastal forests, and into the southern Sierra Nevada in the mountains.
Population and Trends
This species is common in conifer forests across much of its range; population is widespread, and shows no sign of decline.
Population Trend: Stable
Habitat and Ecology
Ectomycorrhizal with conifers, in a wide variety of forests types. Fruiting in fall.
Threats
No threats have been identified.
Conservation Actions
None needed.
Research needed
Use and Trade
This species is edible, and if often collected for food; although to a lesser extent than other true Boletus species (the Porcini).
Bibliography
Desjardin, D.E., Wood, M.G. and Stevens, F.A. 2015. California Mushrooms: The Comprehensive Identification Guide. Timber Press: Portland, OR. 560 p.
iNaturalist. Accessed 31 Dec. 2020. https://www.inaturalist.org/observations?place_id=any&taxon_id=118150
Siegel, N. and Schwarz, C. 2016. Mushrooms of the Redwood Coast. Ten Speed Press: Berkeley, CA. 601 p.
Thiers, H. D. 1975. California Mushrooms—A Field Guide to the Boletes. Hafner Press: New York, NY. 261 p.
