Phylum Ascomycota Caval.-Sm. (1998) - sac fungi Subphylum Pezizomycotina O.E. Erikss. & Winka (1997) Class Dothideomycetes O.E. Erikss. & Winka (1997) Order Patellariales D.Hawksw. & O.E. Erikss. (1986) Family Patellariaceae Corda (1838) Genus Holmiella Petrini, Samuels & E. Müll. (1979)