Species	Mycorrhizal Host
Boletus abieticola	Firs
Boletus aereus	Oaks
Boletus amygdalinus	Madrone and manzanita
Boletus appendiculatus	Oaks and madrone
Boletus calopus	Firs
Boletus dryophilus	Coastal live oak
Boletus edulis	Pines
Boletus flaviporus	Oaks and madrone
Boletus fragrans	Firs
Boletus mirabilis	Hemlock
Boletus regius	Oaks
Boletus satanas	Coastal live oak
Gyroporus castaneus	Oaks
Leccinum arbuticola	Madrone
Leccinum armeniacum	Madrone
Leccinum aurantiacum	Aspen
Leccinum californicum	Aspen
Leccinum constans	Madrone
Leccinum discolor	Aspen
Leccinum insigne	Aspen
Leccinum manzanitae	Madrone and manzanita
Leccinum montanum	Aspen
Pulveroboletus ravenelii	Oaks
Suillus acerbus	Monterey and Bishop pines
Suillus brevipes	Beach and lodgepole pines
Suillus caerulescens	Douglas fir
Suillus fuscotomentosus	Ponderosa pine
Suillus glandulosipes	Bishop pine
Suillus lakei	Douglas fir
Suillus ponderosus	Douglas fir
Suillus pungens	Monterey pine
Suillus tomentosus	Beach and lodgepole pines
Suillus umbonatus	Lodgepole pine
Suillus volcanalis	Jeffrey pine
Tylopilus humilis	Bishop pine
Tylopilus indecisus	Oaks