SummaryThe imperfect stages of two species ofMelanconisand two species ofPseudovalsawere obtained in single ascospore cultures.Melanconis stilbostoma(Fries) Tul., with hyaline ascospores, produced aMelanconiumstage agreeing withM. bicolorNees, and containing a second type of hyaline cylindrical conidium intermixed with the brown elliptical conidia.Melanconis decoraensisEllis, with brown ascospores, produced aMelanconiumstage, but no second type of conidium.Pseudovalsa longipes(Tul.) Sacc. produced aCoryneumstage agreeing withC. KunzeiCorda, and also a second type of hyaline cylindrical conidium.P. sigmoidea(Cooke&Ellis) Sacc. is given as a synonym ofP. longipes.Pseudovalsa lanciformis(Fries) Ces.&De-Not. produced aCoryneumstage agreeing withC. disciformeCorda, but no second type of conidium. Identical conidia were also produced in pycnidial locules enclosed within a stroma. The presence of apical germ pores in the ascospores was noted and described.Pseudovalsa umbonata(Tul.) Sacc. is given as a synonym ofP. lanciformis, with evidences for its being a variety onQuercusdue to a difference in the size of its conidia (Coryneum umbonatumNees).