Lots of lichens!

Lipstick Cladonia, Blood Spattered Beard, Frogs Pelt and False Pixie Cup, Oh My!
Not a plant, not a fungus—it's a dream-team! Lichens are a symbiotic relationship between fungi and algae (or cyanobacteria). The fungus provides structure and protection, while the algae or bacteria produce food through photosynthesis. Lichens are sensitive to air quality, so a sudden drop in lichen populations can indicate changes, like increased pollution. Some of the oldest living organisms on the planet, lichens come in a stunning range of shapes and colors.