The coenocytic hyphae also known as the non-septate hyphae. In which the hyphal mycelium contains the numerous nuclei lying in the common mass of cytoplasm. There are no cross walls in this hyphae. The septa formation occurs only during the reproductive organ formation so as to delimit it from the rest of the vegetative hyphae. It is the characteristics of the Oomycetes and Zygomycetes.