View source for Suillus tomentosus

{{Short description|Species of fungus}}
{{Speciesbox 
| image = 2008-09-02 Suillus tomentosus 41689.jpg
| image_alt = 
| image_caption = 
| genus = Suillus
| species = tomentosus
| authority = (Kauffman) Singer
}}{{Not to be confused|Suillus fuscotomentosus|text=[[Suillus fuscotomentosus]], which is also known as the poor man's slippery jack.}}
'''''Suillus tomentosus''''' is a [[species]] of [[mushroom]]. The [[common names]] of the species are '''blue-staining slippery jack''', '''poor man's slippery Jack''', and '''woolly-capped suillus'''.

==Description==
The [[cap (mycology)|cap]] is {{Cvt|5-12|cm|frac=8}} wide,<ref name=":0">{{Cite book|last1=Davis|first1=R. Michael|url=https://www.worldcat.org/oclc/797915861|title=Field Guide to Mushrooms of Western North America|last2=Sommer|first2=Robert|last3=Menge|first3=John A.|publisher=[[University of California Press]]|year=2012|isbn=978-0-520-95360-4|location=Berkeley|pages=334–335|oclc=797915861}}</ref> pale to orange-yellow with grayish brownish or reddish [[Trichome#Plant trichomes|tomentum]], and viscid while fresh.<ref name=":1" /> The fibrillose-scaly surface of the cap helps distinguish it from other species in the genus.<ref>{{cite web|title=SUILLUS TOMENTOSUS|url=http://www.mykoweb.com/boletes/species/Suillus_tomentosus.html|access-date=29 January 2010|work=MykoWeb}}</ref> The tubes are yellow and become blue when bruised.<ref name="hunter">{{cite book | last = H. Smith | first = Alexander | title = The Mushroom Hunter's Field Guide | publisher = The University of Michigan Press | year = 1974 | pages = 86 }}</ref> The [[stipe (mycology)|stipe]] is {{Cvt|4-11|cm|frac=8}} tall and 1–3 cm wide,<ref name=":0" /> grandular dotted and the color is similar to the cap.<ref name=":1">{{cite book|last=Trudell|first=Steve|url=https://books.google.com/books?id=WevHvt6Tr8kC&q=Suillus+tomentosus&pg=PA224|title=Mushrooms of the Pacific Northwest|author2=Ammirati, Joe|publisher=Timber Press|year=2009|isbn=978-0-88192-935-5|series=Timber Press Field Guides|location=Portland, OR|pages=224–225}}</ref> The cap is scaly and has fibrillose. The [[Basidiospore|spores]] are brownish when they are young.<ref name="demystified">{{cite book | last = Arora | first = David | title = Mushrooms demystified: a comprehensive guide to the fleshy fungi | publisher = Ten Speed Press | year = 1986 | pages = [https://archive.org/details/mushroomsdemysti00aror_0/page/505 505] | url = https://archive.org/details/mushroomsdemysti00aror_0 | url-access = registration | quote = Suillus tomentosus. | isbn = 978-0-89815-169-5 }}</ref> The [[spore print]] is dark olive brown to brown.<ref>{{cite web|url=http://www.mykoweb.com/boletes/species/Suillus_tomentosus.html |title=SUILLUS TOMENTOSUS |access-date=2010-01-28 |work=MykoWeb }}</ref> The species stains fingers blue.<ref>{{cite book | last = Multiple authors | title = North American boletes: a color guide to the fleshy pored mushrooms | publisher = Syracuse University Press | year = 2000 | pages = 255 | url = https://books.google.com/books?id=geiwy6Jf_ZcC&q=Suillus+tomentosus&pg=PA255 | isbn = 978-0-8156-0588-1 }}</ref> It has no [[Veil (mycology)|veil]].<ref name=":1" />

The yellow interior of the mushroom should slowly turn green-blue when cut with a knife.<ref>{{cite book |last=Whitney |first=Stephen |title=Western Forests (The Audubon Society Nature Guides) |date=1985 |publisher=Knopf |location=New York |isbn=0-394-73127-1 |page=[https://archive.org/details/westernforests00whit/page/496 496] |url=https://archive.org/details/westernforests00whit/page/496 }}</ref>

===Edibility===
The mushroom may be edible to some while others may find its taste acidic even after cooking.<ref name="hunter"/> The species has been known to cause [[gastric upset]] in some people.<ref name="Miller 2006"/> The author [[David Arora]] said the species tastes the same as ''[[Suillus fuscotomentosus]]''.<ref name="demystified"/> Arora reports that one collector stated the mushroom smells and tastes like [[Tootsie Rolls]] when dried.<ref>{{cite book | last = Arora | first = David | title = All That the Rain Promises and More: A Hip Pocket Guide to Western Mushrooms | publisher = Ten Speed Press | year = 1991 | pages = 178 | url = https://books.google.com/books?id=87ct90d4B9gC&q=Suillus+tomentosus&pg=PA178 | isbn = 978-0-89815-388-0 }}</ref> The species have also been said to smell like [[almonds]].<ref name="Miller 2006">{{cite book|last1=Miller Jr.|first1=Orson K.|title=North American Mushrooms: A Field Guide to Edible and Inedible Fungi|last2=Miller|first2=Hope H.|publisher=[[FalconGuide]]|year=2006|isbn=978-0-7627-3109-1|location=Guilford, CN|pages=359|author-link=Orson K. Miller Jr.}}</ref> When they look for this species, consumers are advised to be careful to distinguish it from other species that stain blue but are poisonous.<ref>{{cite book |title=A Field Guide to Mushrooms: North America |last=Multiple authors  |year=1998 |publisher=Houghton Mifflin Harcourt |isbn=978-0-395-91090-0 |page=208 |url=https://books.google.com/books?id=kSdA3V7Z9WcC&q=Suillus+tomentosus&pg=PA208-IA22 }}</ref>

=== Similar species ===
Similar species include ''S. fuscotomentosus'',<ref name=":0" /> ''S. reticulatus'', ''S. variegatus'',<ref name="demystified" />  and ''[[Boletus subtomentosus]]''.<ref name=":0" />

{{Mycomorphbox
| name = ''{{PAGENAME}}''{{italic title}}
| hymeniumType = pores
| capShape = convex
| capShape2 = flat
| stipeCharacter = bare
| sporePrintColor = olive-brown
| ecologicalType = mycorrhizal
| howEdible = edible
}}

==Habitat==
The species is commonly found in the [[Rocky Mountains]] of [[Idaho]] and the [[Pacific Northwest]]. It is less common in the lake states. The species fruits in the [[summer]] in the [[Rocky Mountains]]. Also, the species fruits in [[autumn]] along the [[Pacific coast]] and in the lake states.<ref name="hunter"/> The species is by itself or scattered in [[mixed forests]].<ref>{{cite book | last = Multiple authors | title = The Macrofungus Flora of China's Guangdong Province | publisher = Chinese University Press | year = 1997 | pages = 471 | url = https://books.google.com/books?id=0cAered-vqYC&q=Suillus+tomentosus&pg=PA471 | isbn = 978-962-201-556-2 }}</ref> The species can commonly be found under [[lodgepole pine]]s or other two-needle pines. It is rarely found under [[jack pine]]s.<ref name="Miller 2006"/>

''Suillus tomentosus'' forms tuberculate [[ectomycorrhiza]]e (mycorrhizae that are nodular) with [[lodgepole pine]] (''Pinus contorta'' var. ''latifolia'').  Recent work has shown that [[acetylene]] is reduced by the nodules which means that [[nitrogen]] is being [[Nitrogen fixation|fixed]] by bacteria within the nodules.<ref name="nitrogen fixing"/><ref name="nitrogen fixing 2"/>  This system is functionally similar to the [[root nodule]]s in [[legume]]s like [[clover]].  Lodgepole pine can be found growing on gravel pits or other extremely nitrogen deficient soils.  Lodgepole pine with its ''S. tomentosus'' symbiont is one of the most common pioneer species in northern forests.  It colonizes highly disturbed soils and creates an environment suitable for other species to colonize.

==See also==
*[[List of North American boletes]]

==References==
{{Reflist|refs=

<ref name="nitrogen fixing">{{cite journal| journal=Annals of Botany| volume=99| pages=1101–1109| year=2007| doi=10.1093/aob/mcm061| title=Nitrogen Fixation Associated with ''Suillus tomentosus'' Tuberculate Ectomycorrhizae on ''Pinus contorta'' var. ''latifolia''| first1=L.R.| last1=Paul| first2=B.K.| last2=Chapman| first3=C.P.| last3=Chanway| url= | pmid=17468111| issue=6| pmc=3243579}}</ref>

<ref name="nitrogen fixing 2">[http://article.pubs.nrc-cnrc.gc.ca/ppv/RPViewDoc?issn=1208-6037&volume=36&issue=2&startPage=460], Paul, Chapman and Chanway, Can. J. For. Res. Vol. 36, 2006.</ref>

}}

==External links==
*{{Commons category-inline}}

{{Taxonbar|from=Q7635512}}

[[Category:Edible fungi]]
[[Category:Suillus|tomentosus]]
[[Category:Fungus species]]