Lichens are incredible symbiotic organisms, composed of fungi, algea, and cyanobacteria. In lichen, the dominate partner is a fungus, unable to produce its own food, that has cultivated a relationship with food-producing algea and cyanobacteria. There are thousands of species of lichen in a variety sizes, shapes, colors, and textures. I find them facinating because they can grow in the most marginal of habitats, including bare stone, and make interesting photographic subjects. I found these while hiking in Whitesbog.