''Xerocomus'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

of poroid

fungi A fungus ( : fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, separately from ...

related to '' Boletus''. Many mycologists did not originally recognize the distinction between the two genera and placed ''Xerocomus'' taxa in genus ''Boletus''. However, several molecular

phylogenetic In biology, phylogenetics (; from Greek φυλή/ φῦλον [] "tribe, clan, race", and wikt:γενετικός, γενετικός [] "origin, source, birth") is the study of the evolutionary history and relationships among or within groups o ...

studies have demonstrated that ''Xerocomus'' is a heterogeneous genus of polyphyletic origin, which has resulted in further division of ''Xerocomus'' into ''

Xerocomellus ''Xerocomellus'' is a genus of fungi in the family Boletaceae. The genus, as it was described in 2008, contained 12 species. However '' X. rubellus'' and '' X. engelii'' were transferred to the new genus '' Hortiboletus'' and '' X. armeniacus'' ...

'' and ''

Hemileccinum ''Hemileccinum'' is a genus of fungi in the family Boletaceae. It was erected in 2008 by Josef Šutara to contain two species united by a number of shared morphological features: '' H. depilatum'' and the type '' H. impolitum''. In 2014 ...

''. The members of the genus ''Xerocomellus'' are more closely related to ''Boletus'' than true ''Xerocomus'' is, which is relatively distantly related to ''Boletus'' and more closely related to '' Phylloporus''. Other former ''Xerocomus'' species have since been moved to '' Aureoboletus'', ''

Imleria ''Imleria'' is a genus of fungi in the family Boletaceae. It was erected in 2014 by Alfredo Vizzini as a new genus for what had previously been named ''Boletus badius'' or ''Xerocomus badius''. It was placed in its own genus because of its distin ...

'', ''

Hortiboletus ''Hortiboletus'' is a genus of fungi in the family Boletaceae. It was circumscribed in 2015 by Giampaolo Simonini, Alfredo Vizzini, and Matteo Gelardi. The erection of ''Hortiboletus'' follows recent molecular studies that outlined a new phylog ...

'' and ''

Rheubarbariboletus ''Rheubarbariboletus'' is a fungal genus in the family Boletaceae. Circumscribed in 2014, it contains two species found in Europe: '' Rheubarbariboletus persicolor'', and the type, '' R. armeniacus''. The generic name is derived from the La ...

''. Ladurner and Simonini published a

monograph A monograph is a specialist work of writing (in contrast to reference works) or exhibition on a single subject or an aspect of a subject, often by a single author or artist, and usually on a scholarly subject. In library cataloging, ''monograph ...

on ''Xerocomus'' in 2003, but this predated the taxonomical revisions based on phylogenetic inferences. In 2008, Hills included 18 species found in Britain, not including some species sometimes treated as ''Xerocomus'', and including ''

Boletus pulverulentus ''Cyanoboletus pulverulentus'', commonly known as the ink stain bolete, is an edible mushroom, edible bolete mushroom. It is found in deciduous forest, deciduous and mixed forests, particularly on moist soil on slopes and under beech and oak trees ...

'' and ''

Boletus impolitus ''Hemileccinum impolitum'' is a basidiomycete fungus of the family Boletaceae, native to Europe. It is commonly referred to as the iodine bolete, because its fruit bodies tend to emit an iodine odour when cut, more detectable in the stem base o ...

''., currently placed in genera ''

Cyanoboletus ''Cyanoboletus'' is a fungal genus in the family Boletaceae. Circumscribed in 2014, it contains four species: '' C. flavosanguineus'', '' C. rainisii'', '' C. sinopulverulentus'', and the type, '' C. pulverulentus''. The gene ...

'' and ''

'', respectively. More recent phylogenies have confirmed ''Xerocomus'' as monophyletic in its new restricted arrangement. Most members of ''Xerocomus'' are

edible An edible item is any item that is safe for humans to eat. "Edible" is differentiated from "eatable" because it does not indicate how an item tastes, only whether it is fit to be eaten. Nonpoisonous items found in nature – such as some mushroo ...

, though of mediocre gastronomical value and inferior to the sought-after porcini.

Species

*'' X. albobrunneus'' Heinem. & Gooss.-Font. 1951 *'' X. albotessellatus'' Heinem. 1964 *'' X. alliaceus'' (Beeli) Heinem. 1951 *'' X. amazonicus'' Singer 1978 *'' X. anthracinus'' M.Zang, M.R.Hu & W.P.Liu 1991 *'' X. astereicola'' Imazeki 1952 *'' X. astraeicolopsis'' J.Z.Ying & M.Q.Wang 1981 *'' X. belizensis'' — Belize *'' X. chrysonemus'' *'' X. cyaneibrunnescens'' — Guyana *'' X. ferrugineus'' *'' X. griseo-olivaceus'' — New Zealand *'' X. guidonis'' *'' X. illudens'' — North America, India and Bangladesh *'' X. lentistipitatus'' — New Zealand *'' X. mcrobbii'' — New Zealand *'' X. nothofagi'' — New Zealand *'' X. olivaceus'' — Belize *'' X. parvogracilis'' — Guyana *'' X. porophyllus'' — China *'' X. potaroensis'' — Guyana *'' X. rufostipitatus'' — New Zealand *'' X. silwoodensis'' (edibility not known, found in

England England is a country that is part of the United Kingdom. It shares land borders with Wales to its west and Scotland to its north. The Irish Sea lies northwest and the Celtic Sea to the southwest. It is separated from continental Europe b ...

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, and

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. Named seventh top species of 2008,

International Institute for Species Exploration The International Institute for Species Exploration (IISE) is a research institute located in Syracuse, New York. Its mission is to improve taxonomical exploration and the cataloging of new species of flora and fauna. Since 2008, IISE has publ ...

) *'' X. squamulosus'' — New Zealand *'' X. subtomentosus'' (edible and very common, found in Eurasia, North America and Australia ) *'' Xerocomus tenax''

Description

References

External links

The genus ''Xerocomus''

* * {{Taxonbar, from=Q578471 Boletaceae Boletales genera