species mushroom family described new species mushroom known japan grows dead fallen twigs lowland forests dominated oak mushroom whitish cap reaches diameter atop slender stem long thick underside cap whitish spaced gills narrowly attached stem microscopic characteristics mushroom include spores turning bluish black black presence melzer reagent pear shaped broadly club shaped cheilocystidia cystidia found gill edge covered numerous spaced cylindrical lack pleurocystidia cystidia gill face hyphae outer layer cap stem edibility mushroom unknown taxonomy naming classification mushroom collected japanese mycologist reported new species seven specific epithet derived latin word meaning japanese suggests mushroom best classified section genus defined dutch specialist description cap conical convex bell shaped reaching diameter margin dry somewhat changing color loses water cap surface initially appearing covered fine white powder soon smooth cap color whitish pale brownish center white flesh thick distinctive taste odor slender stem long thick cylindrical centrally attached cap hollow surface dry near covered fine soft hairs base whitish grayish violet near gradually dark violet stem base covered long fairly coarse whitish gills narrowly attached stem spaced gills reach stem broad thin whitish gill edges color gill faces edibility mushroom determined microscopic characteristics spores ellipsoid thin walled smooth measure basidia spore bearing cells club shaped spored basal cheilocystidia cystidia gill edge abundant pear shaped broadly club shaped measure covered numerous thin walled spaced simple somewhat branched cylindrical straight curved pleurocystidia cystidia gill face species gill producing tissue thin walled hyphae wide cylindrical inflated smooth hyaline translucent reddish reddish brown melzer reagent cap cuticle parallel bent hyphae wide cylindrical covered simple highly branched thin walls layer hyphae underneath cap cuticle parallel arrangement hyaline short inflated cells wide stem cuticle parallel bent hyphae wide cylindrical pale violet thin walled cystidia stem wide similar appearance cheilocystidia stem tissue arranged cylindrical hyphae measuring wide smooth hyaline clamp connections present cap cuticle flesh base basidia similar species section similar malaysian species having grayish white cap cheilocystidia finger like habitat distinguished forming smaller fruit bodies caps wide gills hyaline white stem broadly ellipsoid spores habitat distribution known japan found growing solitary scattered dead fallen twigs lowland forests dominated oak species
Mycena multiplicata