The Basidiomycetes are known as club fungi due to the presence of club shaped ascus-like structure called as basidium. Basidium is enlarged hyphae from which four haploid basidiospores are developed externally. They are unicellular, uninucleate and haploid which germinate to form the new mycelium. The life cycle of the club fungi consists of three phases, basidiospores, primary mycelium and secondary mycelium. The secondary mycelium grows extensively and produces the fruiting body called as basidiocarp.
