Contribution to the knowledge of Hypoxylon and Annulohypoxylon in Guilan province (N Iran)

During a study on wood inhabiting fungi in guilan province, several specimens of the hypoxylon and annulohypoxylon, were examined. a total of eight taxa viz. hypoxylon fragiforme on fagus orientalis; h. howeanum on alnus sp., carpinus betulus, castanea sativa, parrotia persica, gleditschia caspica, ilex aquifolium and laurocerasus officinalis; h. perforatum on zelkova carpinifolia and gleditschia caspica; h. rubiginosum on quercus castaneifolia and populus sp.; annulohypoxylon annulatum on quercus castaneifolia; a. minutellum on carpinus betulus; a. moriforme on quercus sp. and a. moriforme var. microdiscum on pterocarya fraxinifolia, were identified. among them h. perforatum, a. annulatum, a. minutellum, a. moriforme and a. moriforme var. microdiscum are new to the iranian mycobiota.