Xanthoconium

Xanthoconium
	Xanthoconium purpureum
Scientific classification
Domain:	Eukaryota
Kingdom:	Fungi
Division:	Basidiomycota
Class:	Agaricomycetes
Order:	Boletales
Family:	Boletaceae
Genus:	Xanthoconium; Singer (1944)
Type species
	Xanthoconium stramineum; (Murrill) Singer (1944)

Xanthoconium is a genus of bolete fungi in the family Boletaceae. It was circumscribed by mycologist Rolf Singer in 1944, who included Boletus affinis and what was then known as Gyroporus stramineus as the type species. These two species were part of the "strange group of species described by Murrill and Snell as white-spored Gyropori, and separated by the latter under the new generic name Leucogyroporus."^[1] C.B. Wolfe described three species from the United States in 1987: X. chattoogaense, Xanthoconium montaltoense, and X. montanum.^[2] As of February 2015^[update], the nomenclatural database Index Fungorum list seven species in Xanthoconium.^[3]

The concept of Xanthoconium has been not fully described using molecular phylogenetic analysis, but it is clearly a distinct genus, apart from Boletus.^[4] However, Xanthoconium separans was found to be more closely related to Boletus Sensu stricto than to Xanthoconium.^[4]

Species

Scientific name	Taxon author	Year	Distribution
Xanthoconium affine	(Peck) Singer	1944	hardwood forests east of the Rocky Mountains, and in Mexico
Xanthoconium chattoogaense	Wolfe	1987	Known only from the type locality, along a tributary of the Chattooga River in North Carolina.^[2]
Xanthoconium fusciceps	N.K. Zeng, Zhi Q. Liang & S. Jiang	2017	China
Xanthoconium montaltoense	Wolfe	1987	Found in south-central Pennsylvania.^[2]
Xanthoconium montanum	Wolfe	1987	Found in Macon County, North Carolina, in Nantahala National Forest.^[2]
Xanthoconium porophyllum	G. Wu & Zhu L. Yang	2016	China
Xanthoconium purpureum	Snell & E.A.Dick	1962	eastern North America
Xanthoconium separans	(Peck) Halling & Both	1998	South Eastern United States
Xanthoconium sinense	G. Wu, Y.Y. Cui & Zhu L. Yang	2016	China
Xanthoconium stramineum	(Murrill) Singer	1944	eastern North America

References

^ Singer R. (1944). "New genera of fungi. I". Mycologia. 36 (4): 358–68. doi:10.2307/3754752. JSTOR 3754752.
^ ^a ^b ^c ^d Wolfe CB Jr. (1987). "Studies in the genus Xanthoconium (Boletaceae). I. New species and a new combination". Canadian Journal of Botany. 65 (10): 2142–6. doi:10.1139/b87-295.
^ Kirk PM. "Species Fungorum (version 15th February 2015). In: Species 2000 & ITIS Catalogue of Life". Retrieved 15 February 2015.
^ ^a ^b Nuhn ME, Binder M, Taylor AFS, Halling RE, Hibbett DS (2013). "Phylogenetic overview of the Boletineae". Fungal Biology. 117 (7–8): 479–511. doi:10.1016/j.funbio.2013.04.008. PMID 23931115.

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[Singer_1944-1] Singer R. (1944). "New genera of fungi. I". Mycologia. 36 (4): 358–68. doi:10.2307/3754752. JSTOR 3754752.

[Wolfe_1987-2] Wolfe CB Jr. (1987). "Studies in the genus Xanthoconium (Boletaceae). I. New species and a new combination". Canadian Journal of Botany. 65 (10): 2142–6. doi:10.1139/b87-295.

[Kirk_2015-3] Kirk PM. "Species Fungorum (version 15th February 2015). In: Species 2000 & ITIS Catalogue of Life". Retrieved 15 February 2015.

[Nuhn_2013-4] Nuhn ME, Binder M, Taylor AFS, Halling RE, Hibbett DS (2013). "Phylogenetic overview of the Boletineae". Fungal Biology. 117 (7–8): 479–511. doi:10.1016/j.funbio.2013.04.008. PMID 23931115.

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