Fruticose is a type of lichen characterized by its bushy, branched appearance. These lichens often resemble small shrubs or miniature trees, with structures that can be upright or hanging. They typically grow on various surfaces, including rocks, soil, and tree bark, and can thrive in diverse environments. Fruticose lichens are important for ecosystems as they contribute to soil formation and provide habitat for small organisms. They also play a role in nutrient cycling and can be indicators of environmental health, as they are sensitive to air quality and pollution levels.