Titaea formosa anam. sp. nov., a new fungicolous hyphomycete from Spain

Titaea formosa anam. sp. nov., a hyphomycete isolated from an apothecium of Dasyscyphus fuscenses is described and illustrated. The species is charact erized by hyaline, complex, somewhat bird-like, bilaterally symmetrical con idia consisting of one clavate basal cell, two lageniform upper lateral ele ments and three globose cells, one apical and two sublateral hanging from t he lageniform branches, being the apical cell larger than the two sublatera l ones. Notes on closely similar species are given, and a dichotomous key t o the seven known species of the genus is provided.