The process of producing fruiting body precursors, called protoperithecia. Protoperitheicium is a spherical structure that is formed in the sexual phase of ascomycetous fungi such as Neurospora crassa and Sordaria macrospora. Protoperithecium is formed by the enveloping of ascogonia cells by sterile hyphae and it develops into perithecium.
protoperithecium formation