commonly known gray cap species fungus family described gave current widespread species distributed united_states europe africa india found growing spruce pine mixed forests fruit bodies characterized light grayish cap measures diameter gills dry stem distinct odor bitter edible bland mushroom extracts fruit bodies shown laboratory tests activity bacteria humans taxonomy classification naming species originally named swedish mycologist later moved genus interim english naturalist named species later transfer species examined type material concluded names referred species additional historical synonyms include var monograph american classified grouping related species characterized dry stem absence gelatinous outer veil specific epithet derived greek word meaning good meaning scent commonly known gray cap description cap diameter initially convex edges rolled ages cap expands flat center slightly depressed slight central elevation color dull gray moist cap surface sticky touch smooth edges layer minute soft hairs flesh soft whitish gray pronounced odor resembling cherry pits bitter occasionally odor weak gills attachment stem maturity attachment meaning gills start extend length stem gills white grayish maturity close distant reach stem moderately narrow thin stem long thick whitish colored pale age thickness somewhat narrowed base solid dry moist gelatinous universal veil present young stem surface evenly covered tiny fine whitish powder time loses hairs powder smooth microscopic characteristics viewed mass spore print spores appear white viewed light microscope ellipsoid smooth yellowish melzer reagent spore bearing cells basidia spored measure long thick pleurocystidia cheilocystidia specialized cystidia found gill faces edges respectively absent species cap cuticle broad gelatinous zone composed loosely interwoven slender hyphae surface hyphae dark brownish gray color arrangement called walls swell giving layer stands contrast underlying flesh layer hyphae cap film clamp connections found hyphae flesh gill found cap flesh edibility activity edible considered bland study capacity mushroom composed organic standard laboratory test determine activity shown growth bacteria including growth similar species resembles similar odor fruit bodies smaller produces larger spores long grows conifers oak sticky stem pronounced odor similar appearance lacks distinctive odor smaller spores habitat distribution fungus isolated cultivated maintained pure cultures fungal artificial planting stock forest fruiting bodies found scattered spruce pine mixed woods united_states fungus found europe czech_republic poland russia turkey united_kingdom africa india
Hygrophorus agathosmus