''Butyriboletus'' 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 ...

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 ...

in the family Boletaceae. The genus was circumscribed in 2014 by mycologists David Arora and Jonathan L. Frank to accommodate "butter bolete" species that were shown by

molecular analysis Genetic testing, also known as DNA testing, is used to identify changes in DNA sequence or chromosome structure. Genetic testing can also include measuring the results of genetic changes, such as RNA analysis as an output of gene expression, or ...

to be phylogenetically distinct from '' Boletus''. ''Butyriboletus'' contains 24

ectomycorrhiza An ectomycorrhiza (from Greek ἐκτός ', "outside", μύκης ', "fungus", and ῥίζα ', "root"; pl. ectomycorrhizas or ectomycorrhizae, abbreviated EcM) is a form of symbiotic relationship that occurs between a fungal symbiont, or mycobi ...

l species found in Asia, Europe, North America and north Africa. The group had earlier been classified as the section ''Appendiculati'' within the large genus ''Boletus''. They were given the common name "butter boletes" as the color of their stalk, flesh and pores was similar to that of butter.

Genetic analysis Genetic analysis is the overall process of studying and researching in fields of science that involve genetics and molecular biology. There are a number of applications that are developed from this research, and these are also considered parts of ...

published in 2013 shows that these species are part of a ''regius''

clade A clade (), also known as a monophyletic group or natural group, is a group of organisms that are monophyletic – that is, composed of a common ancestor and all its lineal descendants – on a phylogenetic tree. Rather than the English term, ...

(named for '' B. regius''), distinct from the core group of the type species '' B. edulis'' and relatives within the

Boletineae The Boletineae are a suborder of the fungal order Boletales. Families in the Boletineae include the Boletaceae and the Paxillaceae. Taxa *Paxillaceae **''Alpova'' **''Austrogaster'' **'' Gyrodon'' **''Hydnomerulius'' **'' Meiorganum'' **'' Mel ...

. The narrowing of ''Boletus'' to this latter group meant that this group would need to be placed in a separate genus, with ''Boletus appendiculatus'' (now '' Butyriboletus appendiculatus'') designated as the

type species In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the species that contains the biological type specimen ...

. The genus name itself is derived from the

Latin Latin (, or , ) is a classical language belonging to the Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through the power of the ...

''butyrum'' "butter". The butter boletes have red or brown caps, yellow pores and stipes that turn blue when cut or bruised in many species, and olive-brown spindle-shaped spores. Their flesh is usually mild tasting. ''

Butyriboletus roseoflavus ''Butyriboletus roseoflavus'' is a pored mushroom in the genus ''Butyriboletus'' found in Asia. It was originally described in 2013 as a species of '' Boletus'', but was transferred the following year to the newly created genus ''Butyriboletus ...

'' is a highly regarded edible mushroom sold in markets in southwestern and southeastern China, while two other species—'' B. yicibus'' and '' B. sanicibus''—are eaten to a lesser degree in

Yunnan Province Yunnan , () is a landlocked province in the southwest of the People's Republic of China. The province spans approximately and has a population of 48.3 million (as of 2018). The capital of the province is Kunming. The province borders the C ...

Species

The following species are recognized, though more may yet be described from Japan, Mexico and China. *''

Butyriboletus abieticola ''Butyriboletus abieticola'' is a pored mushroom in the family Boletaceae. It was originally described in 1975 by mycologist Harry Delbert Thiers as a species of '' Boletus'', but transferred in 2014 to the newly created genus ''Butyriboletus ...

'' *'' Butyriboletus appendiculatus'' *''

Butyriboletus autumniregius ''Butyriboletus autumniregius'' is a pored mushroom in the family Boletaceae. It is found in California, where it fruits under Douglas fir and redwood Sequoioideae, popularly known as redwoods, is a subfamily of coniferous trees within ...

'' *''

Butyriboletus brunneus ''Butyriboletus brunneus'' is a pored mushroom in the family Boletaceae. This North American species was originally described by Charles Horton Peck Charles Horton Peck (March 30, 1833 – July 11, 1917) was an American mycologist of the 1 ...

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Butyriboletus cepaeodoratus ''Butyriboletus cepaeodoratus'' is a pored mushroom in the family Boletaceae. An Asian species, it was originally described in 2013 as a species of '' Boletus'', but transferred to the newly created genus ''Butyriboletus ''Butyriboletus'' i ...

'' *''

Butyriboletus fechtneri ''Butyriboletus fechtneri'' is a basidiomycete fungus in the family Boletaceae. It was formerly regarded as a species of '' Boletus'', but in 2014 was transferred to the newly erected genus ''Butyriboletus'', after molecular data revealed that i ...

'' *''

Butyriboletus floridanus ''Exsudoporus floridanus'' is a species of edible bolete mushroom in the family Boletaceae. In 1945, American mycologist Rolf Singer described a species he found in Florida during his 1942–3 tenure of a Guggenheim Memorial Fellowship. He ori ...

'' *''

Butyriboletus frostii ''Exsudoporus frostii'' (formerly ''Boletus frostii''), commonly known as Frost's bolete or the apple bolete, is a bolete fungus first described scientifically in 1874. A member of the family Boletaceae, the mushrooms produced by the fungus ...

'' *''

Butyriboletus fuscoroseus ''Butyriboletus fuscoroseus'' is a pored mushroom in the family Boletaceae. It was formerly considered a species of '' Boletus'', but in 2014 was transferred to the newly created genus ''Butyriboletus''. ''Boletus pseudoregius'', a European tax ...

'' *''

Butyriboletus huangnianlaii ''Butyriboletus'' is a genus of fungi in the family Boletaceae. The genus was circumscribed in 2014 by mycologists David Arora and Jonathan L. Frank to accommodate "butter bolete" species that were shown by molecular phylogenetics, molecular anal ...

'' *'' Butyriboletus loyo'' *''

Butyriboletus peckii ''Butyriboletus peckii'' is a fungus of the genus ''Butyriboletus'' native to eastern North America. It was first described by Charles Christopher Frost in 1878. Until 2014, it was known as ''Boletus peckii''. Recent changes in the phylogenetic ...

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Butyriboletus persolidus ''Butyriboletus persolidus'' is a pored mushroom in the family Boletaceae. Found in California, where it grows in a mycorrhiza A mycorrhiza (from Greek μύκης ', "fungus", and ῥίζα ', "root"; pl. mycorrhizae, mycorrhiza or my ...

'' *'' Butyriboletus primiregius'' *''

Butyriboletus pulchriceps ''Butyriboletus pulchriceps'' is a fungus of the family Boletaceae native to North America. It was first formally described in 2000 as a member of the genus '' Boletus'', and transferred to ''Butyriboletus ''Butyriboletus'' is a genus of fun ...

'' *'' Butyriboletus querciregius'' *''

Butyriboletus regius ''Butyriboletus regius'' (formerly ''Boletus regius''), commonly known as the royal bolete or red-capped butter bolete, is a basidiomycete fungus of the genus '' Boletus'' found in China and Europe. ''B. regius'' has a pink cap, yellow fl ...

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Butyriboletus roseogriseus ''Butyriboletus roseogriseus'' is a pored mushroom in the family Boletaceae found in Europe. It was originally described as a species of '' Boletus'' in 2014, but transferred later that year to the newly created genus ''Butyriboletus ''Buty ...

'' *'' Butyriboletus roseopurpureus'' *''

Butyriboletus sanicibus ''Butyriboletus sanicibus'' is a pored mushroom in the genus ''Butyriboletus''. Found in China where it grows in association with Yunnan pine ''Pinus yunnanensis'', the Yunnan pine, is a species of conifer in the family Pinaceae. It is foun ...

'' *''

Butyriboletus subappendiculatus ''Butyriboletus subappendiculatus'' is a pored mushroom in the family Boletaceae. This European species was originally described as a species of '' Boletus'' in 1979, but later transferred to ''Butyriboletus'' in 2014. It is considered endanger ...

'' *''

Butyriboletus ventricosus ''Butyriboletus ventricosus'' is a pored mushroom in the family Boletaceae. An Asian species, it was originally described in 2013 as a species of '' Boletus'', but transferred to the newly created genus ''Butyriboletus ''Butyriboletus'' is a ...

'' *''

Butyriboletus yicibus ''Butyriboletus yicibus'' is a pored mushroom in the genus ''Butyriboletus''. Found Yunnan, China, where it grows in association with Yunnan pine ''Pinus yunnanensis'', the Yunnan pine, is a species of conifer in the family Pinaceae. It is ...

References

External links

* {{Taxonbar, from=Q17311833 Boletales genera