hymenium_type neolentinus lepideus
Neolentinus lepideus is a basidiomycete mushroom of the genus Neolentinus , until recently also widely known as Lentinus lepideus . Common names for it include scaly lentinus and train wrecker . Heliocybe is an agaric genus closely allied to " Neolentinus " and the bracket fungus , " Gloeophyllum ", all of which cause brown rot of wood . Heliocybe sulcata , the type and sole species , is characterized by thumb - sized , tough , revivable , often dried , mushroom fruitbodies , with a tanned symmetric pileus that is radially cracked into a cartoon sun - like pattern of arranged scales and ___MASK21___ , distant serrated lamellae , and a scaly central stipe . Microscopically it differs from " Neolentinus " by the absence of clamp connections . Like " Neolentinus ", it produces abundant , conspicuous pleurocystidia . " Heliocybe sulcata " typically fruits on decorticated , sun - dried and cracked wood , such as fence posts and rails , vineyard trellises in Europe , branches in slash areas , and semi - arid areas such on sagebrush or on naio branches in rain shadow areas of Hawaii , or in open pine forests . Veluticeps is a small genus of wood - rot fungi characterized by the production of resupinate to bracket shaped , perennial , tough , brown fruitbodies , that blacken when KOH solution is applied , and with a ___MASK56___ to warted or cracked fertile undersurface . They cause a brown rot of wood . Cystidia in the hymenium are characteristically mostly in fascicles . The genus may be monotypic if " Columnocystis " is excluded . Phylogenetically , the type species , " V . berkeleyi ", groups with several other brown rot genera such as Neolentinus , Heliocybe , and Gloeophyllum . Neolentinus is a genus of wood - decaying agarics with tough ( leathery to woody ) fruit bodies composed of dimitic tissue , serrated ___MASK25___ edges , and nonamyloid white binucleate basidiospores among other features . It was segregated from " Lentinus " in the broad taxonomic sense , hence the derivation of the name . Biologically " Neolentinus " species produce a brown rot type of decay of wood , whereas " Lentinus " causes a white rot . Molecular phylogenetic analysis shows that the two genera are unrelated . " Neolentinus " is phylogenetically allied to other brown rot genera such as " Gloeophyllum ", " Heliocybe ", and " Veluticeps ". A new order , the Gloeophyllales , has been described for these fungi . " Heliocybe " had been placed in synonymy but it differs phylogenetically and anatomically by the lack of clamp connections that all " Neolentinus " produce on their generative hyphae .