9 genera
66 species
2 subspecies and varieties
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Aureoboletus flaviporusviscid Boletus
Boletellus mirabilisadmirable bolete, bragger's bolete
Boletus barrowsiiwhite king bolete
Distribution: Southwest United States
Habitat: Under ponderosa pines
Boletus calopusbitter beech bolete, bitter bolete
Boletus coniferarumconifer Boletus
Habitat: Low- to mid-elevation conifer forests
Boletus eastwoodiaeAlice Eastwood's Boletus
Boletus edulisking bolete, penny bun, cep, porcini, steinpilz
Habitat: Occurs with conifers.
Boletus fibrillosus
Distribution: Widespread in the PNW
Habitat: Occurs in old-growth forests of fir and western hemlock as well as earlier succession forests of western hemlock and Douglas-fir and other mixed forest stands.
Boletus luridiformisred-stalked bolete, scarletina bolete, slender red-pored bolete
Boletus pulcherrimusred-pored bolete
Boletus regineusqueen bolete
Boletus rex-verisspring king bolete, spring king
Boletus rubellusruby bolete
Habitat: Grassy areas, mossy lawns, or along the edges of trails, always near trees such as oaks, cottonwood, willow, and basswood or linden.
Boletus rubripesbitter bolete, red-stemmed bitter bolete
Distribution: Widespread but not particularly common in the PNW region.
Habitat: It was described from coastal conifer and mixed forests in California, but in the PNW, occurs in montane conifer forests.
Boletus smithiiSmith's Boletus
Boletus subtomentosusboring brown bolete, suede bolete, yellow-cracked bolete
Boletus zelleriZeller's bolete
Distribution: Common in coastal and low elevation conifer forests.
Habitat: Occurs in urban areas, parks, along trails, and in other areas where conifers occur.
Chalciporus piperatuspepper bolete, peppery bolete
Distribution: It is widespread and can be rather common in some years, but usually is not abundant.
Gastroboletus turbinatusbogus bolete, gastroid bolete
Description: The genus Gastroboletus is used for secotioid fungi that are similar to species of Boletus. Usually a cap is present and typically it is rounded or flattened with the margin turned down. However, in G. ruber (Zeller) Cázares & Trappe (= Truncocolumella rubra Zeller), the cap is so reduced that it looks like a false truffle without a complete peridium. In most Gastroboletus species the tubes are elongated, curved or contorted, and often olive to brown. The stipe is usually short and stout or sometimes forms a columella. G. turbinatus is our most common species, occurring from spring through fall. At first glance, the fruitbody looks like a bolete, such as Boletus chrysenteron---the cap is velvety and brown with yellowish and reddish areas, the stipe is rather short, pointed below, yellowish with small reddish scales and granules, and the pores are rather large, reddish and stain blue. The tubes are long, curved, yellow to greenish yellow and clearly indicate its secotioid nature. The flesh is yellowish, with some red just below the cap cuticle, and the whole interior stains blue after cutting.
Distribution: Broad
Gyroporus castaneuschestnut bolete
Leccinum aurantiacumorange-capped bolete, red-capped scaber-stalk, aspen scaberstalk
Leccinum insigneaspen bolete, aspen rough-stem, aspen scaber-stalk
Habitat: Associated with aspen
Leccinum manzanitaemadrone bolete, manzanita bolete, manzanita mushroom
Habitat: Associated with Arbutus and Arctostaphylos.
Substrate: Soil.
Leccinum scabrumbrown birch-bolete, birch bolete, common scaber-stalk, birch scaberstalk
Habitat: Common in urban and suburban settings and less so in natural habitats. Occurs with birch.
Phylloporus rhodoxanthusgilled bolete
Porphyrellus porphyrosporusdark bolete, dusky bolete
Distribution: Widespread but not abundant.
Habitat: P. porphyrosporus occurs in coastal and low elevation conifer forests.
Suillus albivelatusnorthern pine bolete
Habitat: S. albivelatus occurs in mixed conifer forests and appears to be associated with pines.
Suillus americanusAmerican slippery cap, American slippery jack, chicken-fat Suillus
Suillus brevipesshort-stemmed bolete, short-stemmed slippery jack, stubby-stalk, short-stalked Suillus
Habitat: It occurs primarily with two-needle pines during late summer and fall
Suillus caerulescensfat jack, blue-staining Suillus, Douglas-fir Suillus
Habitat: Occurs with Douglas fir
Suillus cavipeshollow bolete, hollow-stalked larch bolete, hollow-foot, hollow-stalked tamarack jack, hollow-stemmed tamarack jack, hollow stalk, hollow-stalked larch Suillus
Habitat: associated with larch when it occurs in the PNW.
Suillus granulatusgranulated bolete, milk bolete, weeping bolete, dotted-stalked slippery jack, granulated slippery jack, dotted-stalk Suillus
Suillus grevilleielegant bolete, larch bolete, tamarack jack, larch Suillus
Habitat: Associated with larch.
Suillus lakeiLake's bolete, western painted bolete, matte jack, Lake's slipperycap, western painted Suillus
Habitat: Occurs under Douglas fir.
Suillus luteusslippery jack
Suillus neoalbidipespale slipperycap
Suillus ochraceoroseusrosy bolete, rosy larch bolete
Habitat: Occurs with larch in higher and interior conifer forests, mostly in late spring and summer.
Suillus placiduswhite Suillus
Suillus ponderosusheavy bolete
Suillus pseudobrevipesveiled short-stemmed slippery jack, pine slipperycap
Suillus punctatipes
Habitat: S. punctatipes is common in our moist conifer forests in fall, sometimes appearing in substantial numbers with true fir and western hemlock.
Suillus sibiricusSiberian slippery jack
Suillus subolivaceusslippery Jill, olive-capped Suillus
Suillus tomentosuswoolly pine bolete, blue-staining slippery jack, poor man's slippery jack, tomentose Suillus, woolly-capped Suillus, woollycap
Distribution: Very common and abundant in the PNW.
Habitat: S. tomentosus occurs primarily under lodgepole and shore pines.
Suillus umbonatusjellied bolete, slim jack, umbonate slippery jack
Distribution: It is broadly distributed in the Northern Hemisphere.
Habitat: It is rather abundant at times in lodgepole pine forests in late summer and early fall, and in shore pine woodlands in fall, sometimes growing in clusters and lining the edges of moist depressions.
Suillus viscidusgrayish larch bolete
Habitat: Associated with larch.
Xerocomellus chrysenteroncracked-cap bolete, red-cracked bolete, red-cracking bolete, yellow-fleshed Boletus
Distribution: Northern hemisphere.
Habitat: Temperate mixed hardwood/coniferous forests.
Substrate: Soil.