Tubeufiales » Tubeufiaceae

Dictyospora

Dictyospora Brahamanage, Y.Z. Lu, Boonmee & K.D. Hyde

Index Fungorum number: IF 553178; Facesoffungi number: FoF 03262

Etymology: Name referring to the feature of dictyosporous conidia.

 

Saprobic on submerged decaying wood. Sexual morph: Ascomata superficial, seated on a subiculum, solitary, scattered, globose to subglobose, black, surrounded by brown to black setae. Peridium composed of several-layers of cells of textura angularis, with outer layer cells darkened and inner layer cells pale brown to hyaline. Hamathecium comprising numerous filiform, septate, hyaline pseudoparaphyses. Asci 8-spored, bitunicate, cylindrical, short-pedicellate, apically rounded. Ascospores fasciculate, broadly fusiform, elongate-cylindrical to subfusiform, slightly curved, tapering towards rounded ends, long multi-septate, hyaline, smooth-walled. Asexual morph: Hyphomycetous, dictyochlamydosporous. Conidia broadly oval to ellipsoid, dictyoseptate, pale brown when immature, becoming dark to black when mature. (Brahamanage et al. 2017)

 

Type species: Dictyospora thailandica Brahamanage, Y.Z. Lu, Boonmee & K.D. Hyde

 

Notes: The monotypic genus Dictyospora was introduced for a freshwater species D. thailandica (Brahmanage et al. 2017), which was later recollected by Lu et al. (2018) and characterized by larger ascomata, smaller asci and shorter ascospores than the holotype. Dictyospora has dictyochlamydospores which are similar to Chlamydotubeufia, but phylogeny separates them as distinct genera (Brahmanage et al. 2017; Lu et al. 2018).

 

List of freshwater Dictyospora species

Dictyospora thailandica Brahaman., Y.Z. Lu, Boonmee & K.D. Hyde, Mycosphere 8(7): 924 (2017)

Freshwater distribution: Thailand (Brahmanage et al. 2017; Lu et al. 2018)

 

References

Brahmanage RS, Lu YZ, Bhat DJ, Wanasinghe DN, Yan JY, Hyde KD, Boonmee S (2017) Phylogenetic investigations on freshwater fungi in Tubeufiaceae (Tubeufiales) reveals the new genus Dictyospora and new species Chlamydotubeufia aquatica and Helicosporium flavum. Mycosphere 8:917–933. https://doi.org/10.5943/MYCOSPHERE/8/7/8

Lu YZ, Liu JK (Jack), Hyde KD, Jeewon R, Kang JC, Fan C, Boonmee S, Bhat DJ, Luo ZL, Lin CG, Eungwanichayapant PD (2018) A taxonomic reassessment of Tubeufiales based on multi-locus phylogeny and morphology. Fungal Divers 92:131–344. https://doi.org/10.1007/s13225-018-0411-y

 

Recent Genus

1
Neochlamydotubeufia
Neohelicomyces

Recent Species

Neohelicomyces submersus
Neohelicomyces hyalosporus
Neohelicomyces grandisporus