Saprobic on rotten leaves or submerged wood. Sexual morph: Undetermined. Asexual morph: Hyphomycetous. Conidiomata on natural substratum sporodochial, superficial, punctiform to effuse, velvety, scattered to gregarious, pale brown to dark brown, olive. Conidiophores micronematous, aseptate, simple, hyaline to pale brown, smooth. Conidiogenous cells holoblastic, monoblastic, integrated, terminal, determinate, doliiform to cylindrical. Conidia acrogenous, solitary, dry, cheiroid, pale brown, smooth-walled, septate, composed of three rows of cells arising parallelly from a truncate basal cell, compactly, non-complanate, with or without appendages (Matsushima 1971; Li et al. 2017).
Type species: Pseudodictyosporium wauense Matsush.
Notes: Pseudodictyosporium wauense is a terrestrial species collected from New Guinea. It was re-collected from submerged wood in China and described as cheiroid conidia containing three parallel rows of cells arising from a basal cell (Li et al. 2017). The parallel rows of cells of Pseudodictyosporium are similar to Vikalpa, however, phylogeny separates them as distinct genera (Boonmee et al. 2016; Li et al. 2017; Yang et al. 2018). (Dong et al. 2020)
List of freshwater Pseudodictyosporium species
*Pseudodictyosporium wauense Matsush., Bull. natn. Sci. Mus., Tokyo 14(3): 473 (1971)
Freshwater distribution: China (Li et al. 2017)
Boonmee, S., D’souza, M.J., Luo, Z. et al. Dictyosporiaceae fam. nov. Fungal Diversity 80, 457–482 (2016). https://doi.org/10.1007/s13225-016-0363-z
Dong W, Wang B, Hyde KD, McKenzie EHC, Raja HA, Tanaka K, Abdel-Wahab MA, Abdel-Aziz FA, Doilom M, Phookamsak R, Hongsanan S, Wanasinghe DN, Yu X-D, Wang G-N, Yang H, Yang J, Thambugala KM, Tian Q, Luo Z-L, Yang J-B, Miller AN, Fournier J, Boonmee S, Hu D-M, Nalumpang S, Zhang H (2020) Freshwater Dothideomycetes. Fungal Divers 105:319–575
Li WL, Luo ZL, Liu JK, et al (2017) Lignicolous freshwater fungi from China I: Aquadictyospora lignicola gen. et sp. nov. and new record of Pseudodictyosporium wauense from northwestern Yunnan Province. Mycosphere 8:1587–1597. https://doi.org/10.5943/MYCOSPHERE/8/10/1
Yang J, Liu JK, Hyde KD, Jones EBG, Liu ZY (2018) New species in Dictyosporium, new combinations in Dictyocheirospora and an updated backbone tree for Dictyosporiaceae. Mycokeys 36:83–105
Matsushima T (1971) Microfungi of the Solomon Islands and Papua-New Guinea. Mycologia 64:1–524