Aquapteridospora Yang et al.
Etymology: from pteridospora meaning winged spore and aqua referring to its presence in water.
Saprobic on decaying plant substrates submerged in freshwater. Sexual morph: Undetermined. 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.
Type species: Aquapteridospora lignicola J. Yang, K.D. Hyde & Maharachch.
Notes: Yang et al. (2015) introduced the genus Aquapteridospora with single asexual species, A lignicola, which was collected from freshwater stream in northern Thailand. Luo et al. (2019) introduce the second species collected from freshwater. Aquapteridospora was placed as Diaporthomycetidae genera incertae sedis by Yang et al. (2015). In the phylogenetic analysis of Luo et al. (2019), Aquapteridospora species form a distinct clade within Distoseptisporales and basal to Distoseptisporaceae, and we therefore treat this genus as Distoseptisporales genera incertae sedis, and its familial placement needs further studies.
Aquapteridospora lignicola J. Yang, K.D. Hyde & Maharachch.
Aquapteridospora fusiformis Z.L. Luo, D.F. Bao, H.Y. Su & K.D. Hyde
Luo ZL, Hyde KD, Liu JK, Maharachchikumbura SSN et al. 2019 – Freshwater Sordariomycetes. Fungal Diversity 99, 451–660.
Yang J, Maharachchikumbura SSN, Hyde KD, Bhat DJ, McKenzie EHC, Bahkali AH, Jones EBG, Liu ZY (2015). Aquapteridospora lignicola gen. et sp. nov., a new hyphomycetous taxon (Sordariomycetes) from wood submerged in a freshwater stream. Cryptog Mycol 36:469–478.