species fungus family collected reported new species known japan grows floor oak forests dark brown irregularly cap measures diameter cap supported thin stem long covered base whitish growth attached white cord like resemble plant roots underside cap features thin spaced grayish gills distinct veins running microscopic level distinguishing characteristics include spores turning dark blue black stained melzer reagent club shaped cheilocystidia cystidia gill edges finger like cells outer layer cap stem presence clamp connections taxonomy naming classification collected japanese mycologist reported new seven publication specific epithet derived latin word meaning nest japanese according spores cap cuticle hyphae dark pigment gill hyphae suggest fungus best classified section genus medium sized partly fruit bodies small medium sized white spore prints convex caps similar species placed genus white cord like distinctly gills isolated position section description cap initially conical convex bell shaped flattened age ultimately reaching diameter center cap irregularly pitted margin changing color loses water dry initially covered appears fine white powder soon smooth color brown center dark brown reddish brown farther outward paler margin cap evenly dark brown flesh thick white distinctive taste odor stem long wide cylindrical slightly enlarged base central slender hollow stem surface dry entire length smooth age pale brownish gradually dark brown base base covered white growth attached white cord like gills fused stem spaced gills reaching stem gills broad thin grayish distinct veins running gill edges color gill faces microscopic characteristics spores roughly ellipsoid measure smooth thin walled basidia spore bearing cells club shaped spored abundant cheilocystidia cystidia gill edge club shaped measure form sterile gill edge irregularly cylindrical like measuring thin walled pleurocystidia cystidia gill face absent hymenium bearing tissue smooth thin walled hyphae wide cylindrical inflated contain brownish pigment hyphae meaning turn reddish reddish brown presence melzer reagent cap cuticle parallel bent hyphae wide cylindrical hyphae smooth covered scattered finger like cap cuticle layer parallel hyphae containing brownish pigment hyphae contain short inflated cells wide stem cuticle parallel bent hyphae wide similar appearance hyphae cap cuticle cystidia stem relatively sporadic cylindrical thin walled measure stem tissue composed arranged cylindrical hyphae wide smooth brownish pigment clamp connections present stem tissues bases basidia similar species species originally described brazil comparable having spores club shaped cheilocystidia finger like cap cuticle hyphae differs forming whitish cap club shaped roughly shaped pleurocystidia bears resemblance european species distinguished having cylindrical spores gills veins absence cord like habitat distribution known japan mushroom found growing solitary scattered dead fallen twigs forests dominated oak species fruiting occurs september
Mycena nidificata