Abstract
An undetermined saprobic fungal taxon from Yunnan (China) is revealed as a new genus in
Scortechiniaceae
(
Coronophorales
). The novel taxon,
Yuxiensis
, is characterized by immersed to erumpent, semi-globose ascomata, which are not surrounded by any tomentum or conspicuous subiculum, a subcylindrical quellkörper in the centrum, clavate asci with long pedicels and allantoid hyaline ascospores with granular contents. Maximum likelihood and Bayesian posterior probability analyses based on LSU, ITS,
tef1
and
rpb2
sequence data depict a close phylogenetic relationship of the new genus to
Pseudocatenomycopsis
, hence, confirming its placement in
Scortechiniaceae
.
Parasympodiellaceae
, thus far belonging to
Parasympodiellales
, is transferred to
Coronophorales
based on multi-gene phylogenetic evidence. Additionally, the
incertae sedis
monotypic genus
Arthrocristula
is treated as a synonym of
Parasympodiella
, with
Arthrocristula hyphenata
recombined as
Parasympodiella hyphenata
comb. nov., as the type strain of
Arthrocristula hyphenata
clusters inside the
Parasympodiellaceae
clade along with other
Parasympodiella
taxa.