👉 Hylocomium, also known as hydroliths or hydromycetes, are a group of fungi that form large colonies in soil and water. These structures are composed of microscopic cells called hyphae, which are surrounded by a network of tubes called hyphal whorls. Hylocomies can be found on various surfaces such as rocks, soil, and even in the air. They play an important role in nutrient cycling and provide shelter for other organisms.