tremella mesenterica yellow brain, golden jelly fungus, yellow trembler and witches` butter is common jelly fungus, on tree bran

autumn bark botany brain bran branch bright butter closeup color colorful common environment fall flora food forest fungi fungus gelatinous golden green grow growth habitat jelly lichen macro mesenterica mushroom mushrooms mycology natural nature orange organic outdoor outdoors park plant season seasonal spring tree trembler tremella trunk wild witches wood yellow