Lignicolous freshwater fungi from China Ⅳ: Morphology and phylogeny reveal new species of Pleosporales from plateau lakes in Yunnan Province, China
H. F. Shen
Abstract
This paper is the fourth in a series focused on lignicolous freshwater fungi from China.Yunnan Province is one of the hotspots for fungal research in China, with particularly remarkable fungal diversity, but there is still a significant knowledge gap in our understanding of lignicolous freshwater fungi in lentic habitats (such as lakes and ponds) compared to lotic habitats.As part of our ongoing research on the diversity of lignicolous freshwater fungi in Yunnan plateau lakes, 35 collections of Pleosporales (Dothideomycetes) were collected and discovered.Based on morphological characteristics and multigene concatenation datasets, these collections were identified as 21 species, including 18 new species, viz., Aquimassariosphaeria aquatica, Astrosphaeriella yunnanensis, Beverwykella grandispora, Cryptocoryneum sinense, Floricola aquatica, Hermatomyces hongheensis, Hongkongmyces cylindricisporus, H. guttulatus, H. hongheensis, H. yunnanensis, Lindgomyces yunnanensis, Lolia fusiformispora, Periconia dujuanhuensis, P. hongheensis, P. yunnanensis, Pseudotetraploa aquatica, Roussoella dujuanhuensis and Triplosphaeria yunnanensis, one new geographical record for China, Setoseptoria phragmitis and two new records for freshwater habitats, Lonicericola qujingensis and Occultibambusa jonesii.Detailed descriptions, illustrations, and notes are provided for these species.The genus Paralentithecium and the species P. aquaticum and P. suae are also validated here.The study increases the number of lignicolous freshwater fungi in Yunnan Plateau lakes and enhances our understanding of the freshwater fungal diversity in lentic freshwater habitats.