Inonotus P. Karst.
Inonotus, typified by I. hispidus (Bull.) P. Karst., is one of the largest genera within the Hymenochaetaceae; in a wide sense, this genus, accommodating more than 100 species, is distinct from other genera in Hymenochaetaceae by its annual, non-stipitate or rarely laterally stipitate basidiocarps, poroid hymenophores and a monomitic hyphal system (Ryvarden 2005). According to phylogenetic results, four narrowly defined genera segregated from Inonotus sensu lato, viz. Inocutis Fiasson & Niemelä, Inonotopsis Parmasto, Mensularia Lázaro Ibiza, Onnia P. Karst., are accepted, whereas some species with perennial basidiocarps and/or a dimitic hyphal system were also transferred to Inonotus (Wagner and Fischer 2002; Dai 2010; Wu et al. 2012; Vlasák et al. 2013). Recently, Zhou (2015a) introduced a monotypic genus Cylindrosporus L.W. Zhou & Y.C. Dai for species previously belonging to Inonotus, while Zhou et al. (2016a) segregated Sanghuangporus Sheng H. Wu, L.W. Zhou & Y.C. Dai and Tropicoporus L.W. Zhou, Y.C. Dai & Sheng H. Wu from Inonotus and proposed that the remain species in Inonotus still have polyphyletic origins (Zhou et al. 2016a). Herein, a new species of Inonotus is described from Chiang Mai, Thailand Fig. 1.

Fig. 1 Phylogenetic position of Inonotus shoreicola inferred from nLSU sequence data. Topology is from maximum likelihood (raxmlGUI 1.2) analysis, and the statistical values simultaneously above 50 % for bootstrap values and 0.80 for Bayesian posterior probabilities are indicated at the nodes. New taxa are in blue and species for which obtained sequences are based on type material have names in bold.
Species