Oikopleuridae is a family of larvacean tunicates (class Appendicularia). Folia is a genus of larvacean tunicates (class Appendicularia) in the family Oikopleuridae. Oikopleura is a genus of Tunicata (sea-squirts) in the class Appendicularia. Larvaceans (Class Appendicularia) are solitary, free-swimming tunicates found throughout the world's oceans. "Oikopleura dioica" (class Appendicularia) is a semelparous organism, reproducing only once in its lifetime. Appendicularia is a genus of plants in the family Melastomataceae.