Numerous new taxa and classifications of Dothideomycetes have been published following the last monograph of families of Dothideomycetes in 2013. A recent publication by Honsanan et al. in 2020 expanded information of families in Dothideomycetidae and Pleosporomycetidae with modern classifications. In this paper, we provide a refined updated document on orders and families incertae sedis of Dothideomycetes. Each family is provided with an updated description, notes, including figures to represent the morphology, a list of accepted genera, and economic and ecological significances. We also provide phylogenetic trees for each order. In this study, 31 orders which consist 50 families are assigned as orders incertae sedis in Dothideomycetes, and 41 families are treated as families incertae sedis due to lack of molecular or morphological evidence. The new order, Catinellales, and four new families, Catinellaceae, Morenoinaceae Neobuelliellaceae and Thyrinulaceae are introduced. Seven genera (Neobuelliella, Pseudomicrothyrium, Flagellostrigula, Swinscowia, Macroconstrictolumina, Pseudobogoriella, and Schummia) are introduced. Seven new species (Acrospermum urticae, Bogoriella complexoluminata, Dothiorella ostryae, Dyfrolomyces distoseptatus, Macroconstrictolumina megalateralis, Patellaria microspora, and Pseudomicrothyrium thailandicum) are introduced base on morphology and phylogeny, together with two new records/reports and five new collections from different families. Ninety new combinations are also provided in this paper.

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Refined families of Dothideomycetes: orders and families incertae sedis in Dothideomycetes

During a survey of plant-parasitic microfungi in Panama, a new species in a new genus of Parmulariaceae (Ascomycota), Antoniomyces loranthicola, was found on leaves of Gaiadendron punctatum (Loranthaceae). It is described and illustrated. The new species and the new genus differ morphologically from all other known species and genera known in Parmulariaceae by deep internal stroma and superficial radiating hyphae without appressoria.

A new genus of Parmulariaceae from Panama

During a survey for fungal pathogens associated with ferns in Brazil, a tar spot-causing fungus was found on fronds of Pleopeltis astrolepis. This was recognised as belonging to Inocyclus (Parmulariaceae). After comparison with other species in the genus, it was concluded that the fungus on P. astrolepis is a new species, described here as Inocyclus angularis sp. nov.

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A new Inocyclus species (Parmulariaceae) on the neotropical fern Pleopeltis astrolepis.

Kentingia and Setocampanula, two new ascomycete genera.

Species of Parmulariaceae are biotrophic, plant-parasitic microfungi that develop on the surface of living plants. We collected Aldona stella-nigra during a survey of foliar epiphytes in the Philippines and thus we restudied this poorly reported species around the world and re-examined some similar taxa. In this paper we re-describe and illustrate the type species of some similar genera, Aldona, Aldonata and Viegasella in Parmulariaceae which are leaf parasites and also provide details of the spermatial state of these unusual fungi. By re-illustrating the genera we anticipate fresh collections of these genera to be obtained for further studies so that molecular data can be analyzed to obtain a natural classification.

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A.R.P. Sinha

Papers

Aldonata, a new ascomycete genus in the Parmulariaceae