Lophiostoma is a genus of ascomycetous fungi in the family Lophiostomataceae. Species are commonly found growing both on living and dead wood, bark of deciduous trees, on shrubs and on herbaceous hosts. They are also found in freshwater, and marine environments. The genus both forms fruit bodies with sexual reproducing with ascocarp in the form of a perithecium and asexual reproduction in the form of conidia. They grow either on very top of the substrate with most of its whole ascocarp on the top or with only the ostiole sticking through and the rest of the fruitbody below the surface.