Abstract
During an ongoing study of marine fungi from Saudi Arabia, an undescribed taxon was recorded on driftwood collected from intertidal zone at El Khobar sea front, Dammam city, Saudi Arabia. A new taxon, Khaleijomyces, is described in here as a new genus and a new species, K. marinus is established. Phylogenetic analyses of a combined SSU and LSU rDNA dataset position the new genus within the family Juncigenaceae, Torpedosporales. Other phylogenetic related genera are: Fulvocentrum, Juncigena and Marinokulati. The morphology of Khaleijomyces is different from the above three genera and it is characterized by apricot to reddish-brown, membranous, superficial to immersed ascomata with long, periphysate necks; faint apricot-color ascomatal venter, a common character in members of Torpedosporales; hamathecium consists of pseudoparenchymatous tissue that breaks down into catenophyses; cymbiform to fusiform, thin-walled asci, without apical apparatus; hyaline, multi-guttulate and unicellular ascospores when young becoming light-brown to brown in color and 1-4 septate in old specimens.