we stopped briefly in Tumwater, WA for lunch. at this picnic spot we saw a few interesting lichens growing on the trees there. one of which, pictured here, is called horsehair lichen (and felt as much), and was a very dark hue (i would say black) that very much resembled witch's hair. i put it under the same genus of lichen, but they say it's very difficult to distinguish species within the genus Alectoria.