Aquapteridospora J. Yang, K.D. Hyde & Maharachch., gen. nov.,

 MycoBank number: MB 551731; Index Fungorum Number: IF 551731; Facesoffungi number: FoF 01640;

Etymology: from pteridospora meaning winged spore and aqua referring to its presence in water.

Saprobic on decaying plant substrates submerged in freshwater. Asexual morph: Colonies on the natural substrate effuse, hairy, dark brown. Mycelium superficial or partly immersed, composed of branched, septate, pale brown to brown, smooth, thin-walled hyphae. Conidiophores macronematous, mononematous, solitary, erect, straight or slightly flexuous, unbranched, cylindrical, septate, smooth, thick-walled, dark brown at the base, paler towards apex. Conidiogenous cells polyblastic, terminal becoming intercalary, pale brown, integrated, with several sympodial proliferations, bearing tiny, protuberant, circular scars. Conidia solitary, fusiform, smooth, obtuse at both ends, 3 euseptate, slightly constricted at septa, with pale to dark brown central cells and subhyaline end cells, guttulate, acropleurogenous, sometimes with sheaths. Conidial secession schizolytic. Sexual morph: Undetermined.

Type species
: Aquapteridospora lignicola J. Yang, K.D. Hyde & Maharachch.

Notes: Aquapteridospora is described herein as a monotypic genus that was collected on a submerged decaying twig in a stream in Thailand.

Fig. 1. Maximum likelihood (ML) majority rule consensus tree for the analyzed Sordariomycetes isolates based on a dataset of LSU sequence data. RAxML bootstrap support values (ML) are given at the nodes (ML). The scale bar represents the expected number of changes per site. The tree is rooted with Botryotinia fuckeliana and Dothidea sambuci. The original isolate numbers are noted after the species names. The new strain is in blue bold and morphologically similar strains are in red. Orders and subclasses are indicated as coloured blocks.