The ascogonium is a specialized structure found in certain fungi, particularly in the group known as Ascomycetes. It serves as the female reproductive organ during sexual reproduction. The ascogonium is typically a multicellular filament that can fuse with male structures, leading to the formation of a fertilized cell. Once fertilization occurs, the ascogonium develops into a part of the fruiting body, where it contributes to the production of ascospores. These spores are essential for the dispersal and propagation of the fungus, allowing it to reproduce and colonize new environments.