The Hymenochaetales: a revision of the European poroid taxa

Abstract

The relationships of the European poroid Hymenochaetales were assessed from an array of 20 characters: 14 morphological and microscopical features of the fruit body, cultural type and nuclear beha viour of the secondary mycelium, extractable styry lpyrone contents of the basidiocarp , electrophoretic protein patterns and type of en zymatic abi lity of the mycelium. Taxonomic information was retrieved in two ways : phenetic and phylogenetic. As a result, the Hymenochaetales are divided into two suborde rs, Phaeolinae Fiasson & Nieme la and Hymenochaetinae Fiasson & Niemela, the former comprising one family (Phaeolaceae Jiil.) and the latter three (Hymenochaetaceae Donk, lnonotaceae Ftasson & Niemela and Phellinaceae Jiil.). The following genera are accepted to accommodate the European species which were formerly included in the genera of Inonotus and Phe/linus: Inonotus Karst., Inocu!is Fiasson & Niemela (formerly the Inonotus rheades complex), Inonotopsis Parm. , Phylloporia Murr. (P. ribis complex), Fomitiporia Murr. (P. robustus complex), Porodaedalea Murr. (P. pini complex), Ochroporus J.Schroet. (P. igniarius complex), Phe/linidium (Kotl.) Fiasson & Niemela (P. ferrugineofuscus and its allies), Phe/linus Que!. (P. torulosus), Fuscoporia Murr. (P. ferreus and Its allies), and Fulvifomes Murr. (P. rimosus complex). Within these genera, 23 new combinations of spec ies names are proposed. The concepts of the genera and families are emended, and the affinities of the Hymenochaetales to the other groups of fungi are discussed.