ABSTRACTAn undescribedNeocosmosporawith aPenicilliferanamorph was isolated from living twigs ofChamaecyparis thyoidesand stems ofHudsonia ericoidesin the New Jersey Pine Barrens and from a decayed basidioma ofFomes fomentariusfrom northwestern New Jersey. These isolates were found to be the same species as one previously collected on galls ofCrataegus crus-galliin Brooklyn, New York. This is the firstNeocosmosporateleomorph known to produce aPenicilliferanamorph. This newNeocosmosporais homothallic producing both the anamorph and teleomorph in culture. It is unique because of the combination of large ascospores arranged biseriately and green ascospore color on certain media. ThePenicilliferanamorph has conidiophores with a biverticillate branching pattern not seen in other species ofPenicillifer.