commonly known black earth tongue species fungus family earth widely distributed found northern africa asia europe north_america previously thought exist collections locations referred new species species grows soil moss grassy areas smooth nearly black club shaped grow heights ranging head long sticky black earth tongue species similar external appearance reliably distinguished examining differences microscopic characteristics spores described species fungus gone changes genera taxonomic history placed current genus taxonomy fungus officially described dutch mycologist proposed defining characteristics including black color smooth compressed club shaped head grooves somewhat curved stipe transferred genus contain species sterile cells interspersed present continuous gelatinous layer stipe reduced japanese mycologist thought species genus earlier published later authors thought ambiguous described species variety var taxa placed species transferred colleagues newly created genus molecular analysis revealed species formed defined clade published description narrower range spore dimensions suggesting material collected australia new_zealand represent unique species referred species added miller noted new spore size range closely aligned given measurements type specimen specific epithet derived latin word meaning species commonly known black earth tongue description club shaped distinct head lightly colored stipe dark brown grow heights ranging head tall ranges shape fuse shaped narrowly nearly cylindrical somewhat compressed sides nearly black somewhat head vertical groove middle stipe dark grey brown surface spores smooth cylindrical slight swelling middle slightly curved measure spores seven typical mature specimens thin walled spore bearing cells cylindrical narrowly club shaped spored typically measure long wide occupy upper thirds quarters leaving hyaline transparent base hyaline base brown upper regions wide longer cells end pear shaped spherical brownish measure wide sticky material stipe gelatinous matrix layer black earth tongue species generally worth eating opined work thousand american fungi delicious similar species similar appearance lacks stipe species common surface texture acquired thick walled called earth tongue species roughly similar external appearance difficult distinguish species considering distribution microscopic characteristics size shape develop stipe spores measuring spores species distinguished short stout measuring presence curved hooked tips abundant species measuring species tends smaller tall habitat distribution species grow scattered soil moss beds grassy areas north american collections typically associated european collections pasture fungus indicator medium quality grassland india encountered soil oak forests slopes elevation widely distributed species recorded northern africa morocco asia china india japan philippines europe listed vulnerable switzerland bulgaria considered critically endangered threats include habitat changes result agriculture activities crops livestock atmospheric land pollution drought global warming preliminary regional red list dutch considered threatened noted fungus common compared rare year north american distribution includes canada united_states mexico previously thought occurred australia new_zealand later examination genetic analysis collections locations showed material belong described new species
Glutinoglossum glutinosum