Hymenula cerealis (Cephalosporium stripe).

Abstract H. cerealis is a pathogen that causes a vascular wilt disease of gramineous hosts known as Cephalosporium stripe. It is the only known vascular wilt of small grasses and small cereal grains with a fungal aetiology. It causes what is referred to as a 'single-cycle' disease because it does not have an airborne, repeating phase. As such, it is not an invasive species per se.