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 Add this item to the list  Melanoderma B.K. Cui & Y.C. Dai gen. nov.
   
Literature:
 
Page number:297 
Remarks (internal):Australoporus has a dimitic hyphal system, dextrinoid skeletal hyphae, apically encrusted cystidia and cylindrical and thin-walled basidiospores, similar to features found in Melanoderma, but Australoporus has an ungulate basidiocarp without crust at pileal surface, pale pink to orange pore surface, and finely encrusted skeletal hyphae in dissepiments (Buchanan & Ryvarden 1988, Ryvarden 1991).
Datronia and Dichomitus have a dimitic hyphal system with clamped generative hyphae, cyanophilous skeletal hyphae, and cylindrical and thinwalled basidiospores, but those genera differ from Melanoderma in having nondextrinoid skeletal hyphae and lacking apically encrusted cystidia (Masuka & Ryvarden 1999; Ryvarden 1991; Núñez & Ryvarden 2001).
The phylogenetic analysis confirmed Melanoderma as a distinct monophyletic cluster closely related to the genus Vanderbylia D.A. Reid, which, however, has distinctly thick-walled, dextrinoid, and cyanophilous basidiospores (Decock & Masuka 2003). Based on both morphological and molecular data, a new genus is proposed for the new species.
 
Description type:Original description 
Description:Melanoderma B.K. Cui & Y.C. Dai, gen. nov.
MycoBank MB 519872
Basidiocarps perennial, pileate to effused-reflexed, pileus circular to irregularly formed. Pileal surface black when fresh, colour unchanged when dry, concentrically zonate, glabrous; margin obtuse. Pore surface white when fresh, cream buff when dry; pores circular, dissepiments thick, entire. Context cream-buff, woody hard. Tubes cream-buff, woody hard, stratified. Hyphal system dimitic; generative hyphae bearing clamp connections; skeletal hyphae dextrinoid, CB+; tissue unchanged in KOH. Generative hyphae clamped, scanty, hyaline, thin-walled, unbranched; skeletal hyphae dominant, thick-walled to subsolid, usually branched, strongly interwoven. Cystidia clavate to ventricose, hyaline, thin-walled, usually apically encrusted; cystidioles clavate, hyaline, thin-walled. Basidia clavate, with four sterigmata and a basal clamp connection; basidioles similar in shape to basidia, but slightly smaller. Rhomboid crystals frequently present in trama and hymenium. Basidiospores cylindrical, hyaline, thin-walled, smooth, IKI-, CB-.
The genus Melanoderma is characterized by a perennial growth habit, pileate to effused-reflexed basidiocarps with a black crust at pileal surface, a white to cream-buff pore surface, and small, round pores. A dimitic hyphal system with clamped generative hyphae, dextrinoid and cyanophilous skeletal hyphae, cylindrical, thin-walled, non-amyloid, non-dextrinoid and acyanophilous basidiospores, apically encrusted cystidia, and lack of hyphal pegs and dendrohyphidia also distinguish the genus.
 
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