fangorn fern forest green humid leaves moss moss-grown Roots tree tree root wood autumn brush brush-wood brushwood decay fall grow grown natural nature plant soft sunlight tiny trunk underbrush woods mosssy root winter American larch Antarctic flora bush cushion flower grass moss cushion Non-vascular land plant shortstraw pine summer Terrestrial plant vascular plant natural environment Natural landscape nature reserve trees trunks vegetation woodland bank berlin Body of water Freshwater marsh germany grunewald reflection reflections Teufelssee water branches cut down fell limbs overthrow rot rotten timber