Phylum Ascomycota Caval.-Sm. (1998) - sac fungi Subphylum Pezizomycotina O.E. Erikss. & Winka (1997) Class Leotiomycetes O.E. Erikss. & Winka (1997) Order Helotiales Nannf. (1932) Family Ploettnerulaceae Kirschst. (1924) Genus Rhynchosporium Heinsen ex A.B.Frank (1897)