California Fungi: Boletus
- The principal characteristics of the genus Boletus and links to other sites. Also a list of those species found in California with photographs of about 20 of them.
- http://www.mykoweb.com/CAF/genera/Boletus.html

Boletus ruborculus
- This species photographed in Puerto Rico.
- http://www.cortland.edu/nsf/8253Bole.HTML

Boletus luridus
- Photograph of this poisonous species and an identification guide.
- http://www.first-nature.com/fungi/id_guide/boletales/boletus_luridus.htm

Boletus subtomentosus
- This species photographed in the Dominican Republic.
- http://www.cortland.edu/nsf/bsubtome.HTML

Boletus pinophilus
- Photograph of this species.
- http://mykologie.unas.cz/big_htlm/hrib_borovy.htm

Boletus sp.
- Microscopic image.
- http://www.dipbot.unict.it/sistematica/Bole_spo.html

Boletus erythropus
- Photographs and information on this species.
- http://www-biol.paisley.ac.uk/bioref/Fungi_basidiomycetes/Boletus_erythropus.html

Boletus edulis
- Photograph of the edible Cep and an identification guide.
- http://www.first-nature.com/fungi/id_guide/boletales/boletus_edulis.htm

Boletus barrowsii
- Article with photographs by Tom Volk on this boletus and information on the mycologist Chuck Barrows after whom it was named.
- http://botit.botany.wisc.edu/toms_fungi/aug2004.html

Boletus vermiculosus
- Photograph of this species and its distinguishing features.
- http://www.nybg.org/bsci/res/hall/bolmarr.html

Boletus variipes
- Photograph and information on this species.
- http://www.nybg.org/bsci/res/hall/variipes.html

Boletus quercophilus
- Photograph and information on this species.
- http://www.nybg.org/bsci/res/hall/edules.html

Boletus pseudosulphureus
- Photograph of this species and its distinguishing features.
- http://www.nybg.org/bsci/res/hall/pseudosulphureus.html

Boletus ornatipes
- Photograph and information on this species.
- http://www.nybg.org/bsci/res/hall/ornatip.html

Boletus neoregius
- Photograph and information on this red-capped species.
- http://www.nybg.org/bsci/res/hall/bolmills.html

Boletus lychnipes
- Photograph and information on this species.
- http://www.nybg.org/bsci/res/hall/lychnip.html

Boletus innixus
- Photograph of this species and its distinguishing features.
- http://www.nybg.org/bsci/res/hall/auripors.html

Boletus frostii
- Photograph and information on this distinctive species.
- http://www.nybg.org/bsci/res/hall/frostii.html

Boletus flavoruber
- Photograph of this species and its distinguishing features.
- http://www.nybg.org/bsci/res/hall/flavoruber.html

Boletus flavoniger
- Photograph and information on this species.
- http://www.nybg.org/bsci/res/hall/flavongr.html

Boletus flaviporus
- Photograph and information on this luridly colored species.
- http://www.nybg.org/bsci/res/hall/flavipor.html

Boletus rubrocalopus
- Photograph and much information on this species.
- http://www.nybg.org/bsci/res/hall/calopus.html

Boletus auriporus
- Information and several photographs of this species, common in montane Costa Rica.
- http://www.nybg.org/bsci/res/hall/atkinson.html