Exsudoporus

Exsudoporus is a genus of fungi in the family Boletaceae. It was circumscribed in 2014 by Alfredo Vizzini and colleagues,^[1] following a number of molecular studies that outlined a new phylogenetic framework for Boletaceae and revealed the genus Boletus in its traditional circumscription to be polyphyletic.^[2][3] However, due to lack of sufficient sequences, Wu and colleagues (2016) were reluctant to accept the newly proposed genus and considered it a synonym of Butyriboletus.^[4] Following additional phylogenetic sequencing and morphological analyses, Exsudoporus was clearly resolved as a monophyletic, homogenous and independent genus that is sister to Butyriboletus.^[5][6]

Exsudoporus
Exsudoporus permagnificus
Scientific classification
Kingdom:	Fungi
Division:	Basidiomycota
Class:	Agaricomycetes
Order:	Boletales
Family:	Boletaceae
Genus:	Exsudoporus Vizzini, Simonini & Gelardi (2014)
Type species
Exsudoporus permagnificus (Pöder) Vizzini, Simonini & Gelardi (2014)
Species
Exsudoporus floridanus Exsudoporus frostii Exsudoporus permagnificus Exsudoporus ruber

Species of Exsudoporus are united by the tendency of their pores to exude yellowish droplets, hence the generic epithet.^[1] Other distinctive features separating Exsudoporus from its sister-genus Butyriboletus, include the reddish-orange colour of their pores and the distinctly elongated, often 'sculpted' (raised) reticulation on the stipe.^[5][6]

Species

The genus currently accommodates four species:^[7]

Image	Scientific Name	Taxon author	Year	Distribution
	Exsudoporus permagnificus	(Pöder 1981) Vizzini, Simonini & Gelardi	2014	native to Europe and West Asia
	Exsudoporus ruber	(M. Zang) Gelardi, Biketova and Vizzini	2022	native to East Asia
	Exsudoporus floridanus	(Singer 1945) Vizzini, Simonini & Gelardi	2014	North America.
	Exsudoporus frostii	(J.L. Russell 1874) Vizzini, Simonini & Gelardi	2014	North America.[1][5][6]