Fungalpedia – Note 789, Neoleptodontidium
Neoleptodontidium. Crous & Jurjević.
Citation when using this data: Karimi O et al. 2025 (in prep.) – Fungalpedia, Ascomycota.
Index Fungorum, Facesoffungi, MycoBank, GenBank., Fig 1
Classification: Incertae sedis, Xylariales, Xylariomycetidae, Sordariomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi
Crous et al. (2023) established a new genus, Neoleptodontidium (N.), within Xylariales genera incertae sedis to accommodate two species: N. aquaticum as the type species, and N. aciculare (≡ Leptodontidium aciculare V. Rao & de Hoog), which was transferred from Leptodontidium based on combined phylogenetic analyses of ITS-SSU sequences and morphology. Currently, there are only two species of Neoleptodontidium listed in Index Fungorum (2024). Neoleptodontidium aquaticum was isolated from hydroponic water in the USA (Crous et al. 2023), and N. aciculare was isolated from rotten wood in India (Rao & de Hoog 1986). To date, no species of this genus have been reported from peat swamp forests. In this study, we introduce N. narathiwatense as a novel species on the submerged rachis of Eleiodoxa conferta from the peat swamp forest in Narathiwat, Thailand.
Type species: Neoleptodontidium aquaticum Crous & Jurjević, in Crous, Akulov, Balashov, Boers, Braun, Castillo, Delgado, Denman, Erhard, Gusella, Jurjević, Kruse, Malloch, Osieck, Polizzi, Schumacher, Slootweg, Starink-Willemse, van Iperen, Verkley & Groenewald, Fungal Syst. Evol. 11: 135 (2023)
Other accepted species: Species Fungorum – search Neoleptodontidium.
Figure 1 – Neoleptodontidium narathiwatense (MFLU 24-0519, holotype). a Host. b Colonies on the host substrate. c–e Conidiophores and conidiogenous cells. f Conidia. g, h Colonies on the PDA. Scale bars: b = 20 μm, c–e = 25 μm, f = 5 μm.
References
Rao VG, Hoog GS de. 1986 – New or critical hyphomycetes from India. Studies in Mycology 28, 1–84.
Entry by
Omid Karimi, State Key Laboratory of Discovery and Utilization of Functional Components in Traditional Chinese Medicine & School of Pharmaceutical Sciences, Guizhou Medical University, Guian New District, Guizhou 550004, China, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand, School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
Published online 28 July 2025