摘要：Collections of microfungi on bamboo and grasses in Thailand revealed an interesting species morphologically resembling
Lophiostoma, but which can be distinguished from the latter based on multi-locus phylogeny. In this paper, a new genus,
Sublophiostoma is introduced to accommodate the taxon,
S. thailandica sp. nov
. Phylogenetic analyses using combined ITS, LSU, RPB2, SSU, and TEF sequences demonstrate that six strains of the new species form a distinct clade within Pleosporales, but cannot be assigned to any existing family. Therefore, a new family Sublophiostomataceae (Pleosporales) is introduced to accommodate the new genus. The sexual morph of Sublophiostomataceae is characterized by subglobose to hemisphaerical, ostiolate ascomata, with crest-like openings, a peridium with cells of
textura angularis to
textura epidermoidea, cylindric-clavate asci with a bulbous or foot-like narrow pedicel and a well-developed ocular chamber, and hyaline, fusiform, 1-septate ascospores surrounded by a large mucilaginous sheath. The asexual morph (coelomycetous) of the species are observed on culture media.
