polyporous fungus,a common fungus on old tree trunk. howrah, west bengal, india

area autumn background bark bengal birch botany brown closeup color common conk environment forest fungal fungi fungus grass growing growth hard hoof howrah india indian inedible macro moss mushroom mushroomtinder natural nature old outdoor parasite plant pluporous polypore polyporous protected reserve rotten saprophyte season sponge spread stump tinder tree trunk vegetation west wild wood woodland