species mushroom family collected reported new species known lowland oak dominated forests central japan small mushroom characterized grayish brown violet brown cap diameter slender grayish brown reddish brown stem covered minute fine soft hairs mushroom produces spores spores stain treated melzer reagent microscopic distinguishing features include smooth shaped cheilocystidia pleurocystidia cystidia gill edge face respectively elements outer layer cap stem taxonomy naming classification collected published new species seven japanese species specific epithet derived latin word meaning referring stem japanese mushroom fungus classified section defined dutch specialist section largest genus description cap diameter conical convex bell shaped distinct radial grooves extend center dry somewhat changing color loses water surface initially covered appears fine white powder soon smooth cap dark brown center gradually changes reddish brown finally nearly white margin white flesh thick distinctive taste odor slender stem long thick cylindrical attached center cap hollow dry portion stem near base surface covered soft fine hairs stem color grayish brown reddish brown near changing reddish brown near stem base covered long fairly coarse whitish gills narrowly attached stem spaced gills reach stem broad thin whitish gill edges color gill faces microscopic characteristics spores roughly ellipsoid smooth thin walled measure meaning stain blue black treated melzer reagent basidia spore bearing cells club shaped spored bases abundant cheilocystidia cystidia gill edge thin walled measure smooth thin walled shaped cells come abruptly tapering point form sterile gill edge like cheilocystidia pleurocystidia cystidia gill face shaped abundant smooth thin walled measure tissue tissue hymenium bearing structure smooth thin walled element hyphae wide roughly cylindrical inflated hyaline translucent turning reddish reddish brown melzer reagent cap cuticle parallel bent hyphae wide cylindrical smooth covered scattered finger like thin walled brownish underlying hyphae parallel arrangement hyaline brownish short inflated cells wide stem cuticle parallel bent hyphae measuring wide hyphae terminal cells characteristics similar hyphae cap cuticle flesh stem composed arranged cylindrical hyphae wide smooth hyaline clamp connections present layer cap stem basal basidia similar species closely resembles species originally described netherlands european species section differs microscopic characteristics densely elements cap cuticle long cylindrical right angle pleurocystidia distinct forming whitish cap stem initially later smooth like odor ellipsoid cylindrical spores cheilocystidia branches near tip habitat distribution known japan fruit bodies found solitary scattered dead leaves twigs lowland forests dominated oak species fruiting occurs march november
Mycena lanuginosa