yellow field cap mushroom bolbitius titubans sometimes called the egg yolk fungus

autumn bolbitiaceae bolbitius cap close closeup conical decay delicate detail egg england fall field food fragile fresh fungi fungus gills grass green healthy hygrocybe inedible macro meadow mushroom mycology natural nature olivaceous organic outdoor pasture plant psittacina season small stem stipe titubans toadstool vitellinus waxcap white wild yellow yolk