Jew's Ear (Auricularia auricula-judae)

One of the most common fungi in woodland is the Jew's Ear. It is most commonly associated with elder trees. It is edible but I've never eaten it. They come in all sorts of shapes but the most interesting aspect of them (in my opinion) is from underneath where all sorts of intricate and beautiful patterns can be found.
I lifted the explanation of the name (below) from Wikipedia.

"Its specific name is derived from the belief that Judas Iscariot hanged himself from an elder tree; the common name "Judas's Ear" eventually became "Jew's Ear", while today "Jelly Ear" or other names are sometimes used. The mushroom can be found throughout the year in temperate regions worldwide, where it grows upon both dead and living wood. Although it is not regarded as a choice edible mushroom in the west, it has long been popular in China, to the extent that Australia exported large volumes of the mushroom to China in the early twentieth century".