Xylaria, from the Greek word xylon (means wood) is a genus of ascomycetous fungi in the subkingdom Dikarya that grows on dead wood.
Xylaria is a genus of ascomycetous fungi commonly found growing on dead wood. The name comes from the Greek xylon meaning wood (see xylem). Ascomycota is a phylum of the kingdom Fungi that, together with the Basidiomycota, forms the subkingdom Dikarya. 
