Ascomycota is a division or phylum of the kingdom Fungi that, together with the Basidiomycota, form the subkingdom Dikarya. Its members are commonly known as the sac fungi or ascomycetes. They are the largest phylum of Fungi, with over 64,000 species.
Basidiomycota are filamentous fungi composed of hyphae (except for basidiomycota-yeast; refer yeast for more information) and reproduce sexually via the formation of specialized club-shaped end cells called basidia that normally bear external meiospores (usually four).
Comparing Hyphal Structures Coenocytic hyphae allow nutrients to move quickly throughout the filament because the cytoplasm is continuous, without any dividers to slow transport. On the other hand, if a coenocytic hypha is ruptured, the entire filament will die because nothing keeps the cytoplasm from leaking out.
The fungi imperfecti or imperfect fungi, also known as Deuteromycota, are fungi which do not fit into the commonly established taxonomic classifications of fungi that are based on biological species concepts or morphological characteristics of sexual structures because their sexual form of reproduction has never been observed.
Hyphae are tubular structures that constitute the basic unit of a fungal mycelium. It is the efficient growth of hyphae that plays a crucial role in fungal colonisation of a substrate. Hyphal growth is driven by localised cell surface expansion and cell wall deposition at the hyphal tip.
Non-septate hyphae, also known as aseptate or coenocytic hyphae, form one long cell with many nuclei. They are the more primitive form of hyphae; species with septate hyphae diverged from a common ancestor with coenocytic hyphae. Most fungi with coenocytic hyphae belong to the class Zygomycetes.