Veronaea aquatica sp. nov. (Herpotrichiellaceae, Chaetothyriales, Eurotiomycetes) from submerged bamboo in China

Freshwater fungi are highly diverse and ecologically important in freshwater systems. In China, more than 1000 species of freshwater fungi are known. Here, we present a brown-spored hyphomycetes that was collected on a submerged decaying bamboo culm in a forest stream in China.Phylogenetic analyses of combined LSU, ITS and TUB2 sequences confirm the placement of our new strain in Veronaea (Herpotrichiellaceae), sister to V. japonica. Veronaea aquatica sp. nov. differs from related taxa V. compacta and V. japonica in having longer conidiophores and cylindrical to pyriform or subclavate conidia with 0–2 septa. Veronaea aquatica also has darker brown hyphae compared to V. japonica. A morphological description and detailed illustrations of V. aquatica are provided.

淡水真菌在淡水生态系统中具有极高的多样性和生态重要性。在中国，已知淡水真菌物种超过1000种。本研究中，我们介绍了一种在森林溪流中沉水腐烂竹筒上收集到的棕孢暗梗霉。通过结合LSU、ITS和TUB2序列的分子系统发育分析，证实了我们的新菌株属于Veronaea（Herpotrichiellaceae）属，与V. japonica为姐妹群。新种Veronaea aquatica与近缘种V. compacta和V. japonica在菌丝较长、分生孢子梗圆柱形至梨形或亚棒锤形，具有0-2个横隔膜上存在差异。与V. japonica相比，Veronaea aquatica的菌丝颜色更深。本文提供了V. aquatica的形态学描述和详细插图。