Fungalpedia – Note 2090, Paradictyoarthriniaceae

 

Paradictyoarthriniaceae Doilom, Jian K. Liu & K.D. Hyde

Citation when using this data: Hongsanan S et al. 2020 – Fungalpedia, Ascomycota.

Index Fungorum, Facesoffungi, MycoBank, GenBank.

Classification: Pleosporales, Pleosporomycetidae, Dothideomycetes, Pezizomycotina, Ascomycota, Fungi

Saprobic on dead wood, stem, spathe and spines. Sexual morph: Ascomata small black dots on the host surface, scattered, gregarious, semi-immersed to erumpent through host tissue, uniloculate, globose to subglobose, with papillate ostioles. Peridium thick-walled, of unequal thickness, hyaline inner layers to brown outer layer, pseudoparenchymatous cells, arranged in a textura angularis to textura globulosa. Hamathecium comprising filamentous, cellular pseudoparaphyses, with distinct septa. Asci 8-spored, bitunicate, fissitunicate, broadly cylindrical to cylindric-clavate, subsessile to short pedicellate, apically rounded with well-developed ocular chamber. Ascospores overlapping 1–2-seriate, fusiform, hyaline to brown, asymmetric, septate, constricted at the septa, thick-walled, with sheath. Asexual morph: Colonies on natural substrate, superficial, scattered, gregarious, black, powdery fruiting bodies. Conidiophores macronematous, erect to slightly curved, constricted at septa. Conidiogenous cells blastic, integrated, terminal, determinate. Conidia subglobose to ellipsoidal, very variable in size and shape, solitary or developing in branched chains, circular to irregular with a protruding basal cel, rounded to truncate at the base, brown to black, muriform.

Notes: Liu et al. (2015) introduced Paradictyoarthriniaceae in Pleosporales Dothideomycetes based on phylogenetic analysis and unique morphology. Members have superficial, gregarious, black, powdery fruiting bodies and macronematous conidiophores with muriform, subglobose to ellipsoidal dark brown conidia. However, it is hard to differentiate them by morphology as their conidia are variable in size and shape. They can be distinguished by DNA sequence data. Wanasinghe et al. (2018c) introduced Xenomassariosphaeria, as the second genus in the family.

Type genus: Paradictyoarthrinium Matsush., Matsush.

 

References

Liu JK, Hyde KD, Jones EBG, Ariyawansa HA et al. 2015 – Fungal diversity notes 1–110: taxonomic and phylogenetic contributions to fungal species. Fungal Diversity 72, 1–197.

Wanasinghe DN, Phukhamsakda C, Hyde KD, Jeewon R et al. 2018c – Fungal diversity notes 709–839: taxonomic and phylogenetic contributions to fungal taxa with an emphasis on fungi on Rosaceae. Fungal Diversity 89, 1–236.

 

Entry by

Sinang Hongsanan, Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen Key Laboratory of Microbial Genetic Engineering, College of Life Science and Oceanography, Shenzhen University, Shenzhen 518060, People’s Republic of China, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand, Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50002, Thailand 

 

Published online 25 March 2026

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