Xanthoconium

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, the nomenclatural database Index Fungorum list seven species in Xanthoconium.[3]

Xanthoconium
Xanthoconium purpureum
Scientific classification
Kingdom:
Fungi
Division:
Basidiomycota
Class:
Agaricomycetes
Order:
Boletales
Family:
Boletaceae
Genus:
Xanthoconium

Singer (1944)
Type species
Xanthoconium stramineum
(Murrill) Singer (1944)

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
Known only from the type locality, along a tributary of the Chattooga River in North Carolina.[2]
Found in south-central Pennsylvania.[2]
Found in Macon County, North Carolina, in Nantahala National Forest.[2]
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References
  1. Singer R. (1944). "New genera of fungi. I". Mycologia. 36 (4): 358–68. doi:10.2307/3754752. JSTOR 3754752.
  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.
  3. Kirk PM. "Species Fungorum (version 15th February 2015). In: Species 2000 & ITIS Catalogue of Life". Retrieved 2015-02-15.
  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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