Java Moss is a moss belonging to the Hypnaceae family. Native to Southeast Asia, it is commonly use in freshwater aquariums. It attaches to rocks, roots, and driftwood. The taxonomy of this well-known plant is not resolved; formerly placed in the genus Versicularia as V. dubyana (Brotherus, 1908), it appears as if the plant usually known as java moss belongs into Taxiphyllum, as T. barbieri.