Fruticose is a term used to describe a type of lichen that has a bushy or branched appearance. These lichens often resemble small shrubs or miniature trees, with their structures extending outward from a central point. Fruticose lichens can be found in various environments, including forests, deserts, and rocky surfaces. These lichens play an important role in ecosystems by contributing to soil formation and providing habitat for small organisms. They are sensitive to environmental changes, making them useful indicators of air quality and ecosystem health. Fruticose lichens are often colorful, showcasing shades of green, yellow, or gray.