Hymenoscyphus sp, commonly called a nut disco fungus

Sac fungi or ascomycetes of the genus Hymenoscyphus from Finland, commonly called a nut disco fungus

AscomycotaFinlandHelotialesHymenoscyphusHymenoscyphus spOctoberSac fungiSalixascomyceteascomycetesautumnbranchcupcupshapedcupsdecaydisco fungusdiscomycetediscomycetesfallfungifungusgroupkotelosienimycologynut discorotsacsac fungussmalltiimakkatinywillowyellowmaljakascup fungusmushroommushrooms