Abstract
Distoseptispora
is one of the sporidesmium-like taxa with great variation in asexual morphology and delineation of species. Phylogenetic analyses of four gene regions LSU, ITS,
TEF1α
, and
RPB2
revealed the placement of several sporidesmium-like species in
Distoseptispora
(
Distoseptisporaceae
,
Distoseptisporales
,
Sordariomycetes
), collected on submerged decaying twigs from streams in China and Thailand. Based on morphological examination and molecular DNA data, six new species,
Distoseptispora amniculi
,
D. atroviridis
,
D. effusa
,
D. fusiformis
,
D. hyalina
, and
D. verrucosa
, are proposed. Among them,
D.
hyalina
is the first sexual morph confirmed in the genus. A new geographical record is reported for
D. lignicola
in China. Conidial length proved to be of less taxonomic significance for some
Distoseptispora
species, whereas the type of conidial septa is informative at species level.