commonly known milk cap species fungus family found spruce mixed forests fairly common species pacific_northwest region north_america northerly range extending alaska fruit bodies medium sized brown caps diameter bearing distinct pointed caps supported stems long thick mushroom whitish latex cut injured tissue eventually turns dull reddish color eastern north american european species closely similar appearance distinguished differing range taxonomy classification species originally described american publication smith initial collection late october oregon publication described variety var based specimens collected according smith variety point generally identified pacific_northwest described variety var account differences spore ornamentation distant gills maturity typically slightly taste monograph north american species considered var equivalent synonymous var specific epithet derived latin word mushroom commonly known milk cap classified section subgenus genus species section brown caps cap cuticle contains dissolved brown pigment cuticle species type hyphae emerge roughly parallel like hairs perpendicular cap surface description cap wide ranging shape convex nearly flat small expanding plane depressed margin cap edge cap surface dry finely center concentric lines dark brown gills attached running shortly length stem narrow crowded white buff age edges gills brown like cap slowly stain colored bruised tiers short gills reach stem interspersed length gills stem long thick nearly equal width dry solid paler brown cap flesh thin pale odor distinctive taste mild latex white exposure slowly flesh gills spore print yellowish edibility mushroom officially documented species brown nearly black according notable beauty likely attract attention casual collector variety var nearly identical main species appearance distribution gill edges colored like gill face microscopic characteristics spores spherical ridges form partial net like pattern lines high hyaline translucent meaning absorb stained melzer reagent measure cap cuticle basidia spore bearing cells club shaped spored hyaline mounted solution potassium abundant cheilocystidia cystidia found edge gills contents ranging color yellow hyaline measure shaped somewhat like tapered end cylinder winding pleurocystidia cystidia found gill face diameter rare scattered similar species similar associated examination microscopic features distinguish restricted distribution eastern north_america europe milk cap dark brown cap smooth cap stem brown capped eastern north american species spaced white gills run stem prefers grow near close gills habitat distribution fruit bodies grow scattered grouped ground rotten logs alpine areas standing conifers fairly common typically found august october distributed western united_states canada northern range extending alaska eastern range bounded east great plains field observations suggest fungus form associations smith noted variety prevalent species fir
Lactarius fallax