I really do like lichens (pronounced LIKE-nz). I came across this arrangement by Mother Nature yesterday in the park.
I had to look up lichens to learn more, and here is what I found: Lichens are a complex life form that is a symbiotic partnership of two separate organisms, a fungus and an alga. The dominant partner is the fungus, which gives the lichen the majority of its characteristics, from its thallus shape to its fruiting bodies."
They come in many colors, too!