In Agaricus (a genus of basidiomycetes), basidiospores or meiospores areproduced exogenously Neurospora (a genus of ascomycetes)produces ascospores as meiospores but endogenously inside the ascus.) Alternaria (a genus of deuteromycetes) does not produce sexual spores. Saccharomyces (Unicellular ascomycetes) produces ascospores, endogenously.