Boletus fibrillosus

Boletus fibrillosus is a basidiomycete fungus of the genus Boletus found in western North America. The fruiting bodies are found in mixed coastal forests in the fall. The cap is up to 17 cm wide, buff to brown to dark brown in color, and has a wrinkled to finely fibrous texture. The tubes are yellow, while the flesh is white to buff and does not stain when cut. The stem is yellow at the top, brown otherwise, and has a reticulate texture. The holotype was collected in Mendocino County, California.[1][2] Boletus fibrillosus is edible, but considered to have inferior taste to other edible boletes such as boletus edulis.[3]

Boletus fibrillosus
Scientific classification
Kingdom:
Fungi
Division:
Basidiomycota
Class:
Agaricomycetes
Order:
Boletales
Family:
Boletaceae
Genus:
Boletus
Species:
B. fibrillosus
Binomial name
Boletus fibrillosus
Boletus fibrillosus
float
Mycological characteristics
pores on hymenium
cap is convex
hymenium is adnexed
stipe is bare
spore print is olive-brown
ecology is mycorrhizal
edibility: edible

Phylogenetic analysis has shown B. fibrillosus as a member of a clade, or closely related group, with B. pinophilus, B. regineus, B. rex-veris, B. subcaerulescens, and Gastroboletus subalpinus.[4]

See also

References
  1. Thiers, Harry D. (1975). California Mushrooms: A Field Guide to the Boletes. New York, NY: Hafner Press. p. 45.
  2. Bessette, Alan; Roody, William C.; Bessette, Arleen Rainis (2000). North American boletes: a color guide to the fleshy pored mushrooms. Syracuse University Press. pp. 110–111. ISBN 978-0-8156-0588-1.
  3. Trudell, Steve; Ammirati, Joe (2009). Mushrooms of the Pacific Northwest. Portland, Oregon: Timber Press. p. 217. ISBN 978-0-88192-935-5.
  4. Dentinger, Bryn T.M.; et al. (2010). "Molecular phylogenetics of porcini mushrooms (Boletus section Boletus)" (PDF). Molecular Phylogenetics and Evolution. 57 (3): 1276–1292. doi:10.1016/j.ympev.2010.10.004. PMID 20970511. Archived from the original (PDF) on 2013-05-23.


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