I was trigger by the mushrooms although, the trees is pretty cool. We have an area near here where there are some kind of HUGE willows that look like that, like something keeps attacking them and that's their response to that shit.
'Shrooms, especially in smaller clusters look like Oyster mushrooms(great eating) - gills that run from the cap into the "stem". Actually, no stem, the tissue is one continuous outgrowth and the gills are just a continuation too, not a separate part. Mushrooms that grow off the ground like that rarely poisonous, 99% of the deadly live on the soil. Because they are dirty little shit eaters.