Pleomonodictydaceae Hern.- Restr., J. Mena & Gené, Stud. Mycol. 86: 76 (2017)

Bundhun, Digvijayini, Jones, E. B. Gareth, Jayawardena, Ruvishika S., Camporesi, Erio, Wanasinghe, Dhanushka N., Senanayake, Indunil C., Thiyagaraja, Vinodhini & Hyde, Kevin D., 2024, Taxonomic novelty in Pleomonodictydaceae and new reports for Ampelomyces quisqualis (Phaeosphaeriaceae), Melomastia maolanensis and M. oleae (Pleurotremataceae), MycoKeys 111, pp. 147-180 : 147-180

Pleomonodictydaceae Hern.- Restr., J. Mena & Gené, Stud. Mycol. 86: 76 (2017) , amended

Description.

Saprobic on woody substrates in terrestrial and aquatic habitats. Sexual morph: Ascomata solitary or in groups, often growing under or in a pseudostroma, immersed, semi-immersed to erumpent, perithecial, brown to dark brown, ostiolate. Ostiolar neck papillate. Peridium multi-layered, outer layer usually fusing with the stroma or host tissue. Pseudoparaphyses hyaline, filiform, cellular. Asci bitunicate, 8 - spored, clavate to cylindric-clavate, pedicellate, with an ocular chamber. Ascospores 1–3 - seriate, fusiform to cylindrical, hyaline, septate, surrounded by a mucilaginous sheath. Asexual morph: hyphomycetous. See Hernández-Restrepo et al. (2017), Jayasiri et al. (2019), Bao et al. (2021) for further details.

Type genus.

Pleomonodictys Hern.-Restr., J. Mena & Gené

Notes.

Pleomonodictydaceae has so far accommodated the two hyphomycetous genera, Pleohelicoon and Pleomonodictys ( Hernández-Restrepo et al. 2017; Jayasiri et al. 2019), whose sexual morphs are still undetermined. In the present study, Inflatispora and the novel genus, Robiniigena are accepted in the family based on the combined SSU – LSU – ITS – tef 1 - α – rpb 2 phylogenetic analyses (Fig. 1 ). Since both genera are known in their sexual morphs, the description of Pleomonodictydaceae is amended to include their sexual morphological characteristics.

Figures

Figure 1. Phylogram generated from maximum likelihood analysis based on SSU – LSU – ITS – tef 1 - α – rpb 2 combined dataset for the families in Massarineae. The evolutionary model GTR + I + G was applied as the best-fit model for all the loci. The BYPP analysis was run for 3 million generations. The tree is rooted with Leptosphaeria doliolum (CBS 505.75) and Stemphylium vesicarium (CBS 191.86). Maximum likelihood bootstrap, ML BS (≥ 60 %), and BYPP (≥ 0.95) supports are respectively shown above or below the branches. Type strains are in bold black, and the novel taxon is in bold red. (-) indicate ML BS < 60 % or BYPP < 0.95. TreeBASE submission ID: 31443 (Reviewer access URL: http://purl.org/phylo/treebase/phylows/study/TB2:S31443?x-access-code=8ac9bd9583064274a7dded00c2fa3595&format=html)