Phylum Ascomycota Caval.-Sm. (1998) - sac fungi Subphylum Pezizomycotina O.E. Erikss. & Winka (1997) Class Sordariomycetes O.E. Erikss. & Winka (1997) Subclass Xylariomycetidae O.E. Erikss. & Winka (1997) Order Xylariales Nannf. (1932) Family Graphostromataceae M.E.Barr, J.D. Rogers & Y.M. Ju (1993) Genus Vivantia J.D. Rogers, Y.M. Ju & Cand. (1996)