Most lichens are a symbiosis between an ascomycete fungus and a photosynthetic green alga. Cordyceps is a genus of ascomycete fungi (sac fungi) that includes about 400 species. Ramularia is a genus of ascomycete fungi. Cercospora is a genus of ascomycete fungi. Sphaceloma is a genus of ascomycete fungi. Magnaporthe is a genus of ascomycete fungi. Pestalotiopsis is a genus of ascomycete fungi. Verpa is a genus of ascomycete fungi related to the morels. Beauveria is a genus of asexually-reproducing fungi allied with the ascomycete family Cordycipitaceae. Zymoseptoria tritici, is a species of filamentous fungus, an ascomycete in the family "Mycosphaerellaceae". Fusicolla is a genus of seven species of ascomycete fungi in the family Nectriaceae. Phomopsis is a genus of ascomycete fungi in the family Valsaceae. Venturia inaequalis is an ascomycete fungus that causes the apple scab disease. Erysiphales are an order of ascomycete fungi. Like their ascomycete counterparts, these fungi are capable of creating truffle-like fruiting bodies.