close-up of a armillaria ostoyae dark hallimasch mushroom on moss

agaric armillaria autumn autumnal biodiversity biology boletus botanical botany brown cap closeup cluster dark edible fall fibrous flora forest fungal fungi fungus ground hallimasch harvest honey leaf mellea molds moss mushroom mycology natural nature organic ostoyae outdoor parasitic plant polymyces season single solidipes spore toadstool wet wild wildlife wood