Xylariales

order of fungi Xylariales (Xylariales) is an order comprising closely related families of organisms. It contains 7 families with 77 known species. Key family groups include Diatrypaceae, Graphostromataceae, Hypoxylaceae, Lopadostomataceae, Melogrammataceae, and Vialaeaceae. Among its members, 10 species are currently classified as threatened (Critically Endangered, Endangered, or Vulnerable). It belongs to Sordariomycetes (Sordariomycetes).