Two new species of Stylonectria (Nectriaceae) from the French Alps

Two new species of Stylonectria are described and illustrated from specimens collected in the French Alps. Ascomatal morphology, fungicolous lifestyle, and phylogenetic comparison of their ITS sequences with species in six similar genera of Nectriaceae having a fusarium-like asexual morph support their placement in Stylonectria. Based on morphological divergences of both sexual and asexual morphs, as well as the ITS sequences from known Stylonectria species, S. alpina and S. tuedensis are proposed as new species.