Chlamydotubeufia
Chlamydotubeufia Boonmee & K.D. Hyde, in Boonmee et al., Fungal Diversity 51(1): 78 (2011).
Index Fungorum number: IF 563500; Facesoffungi number: FoF 02357, 5 morphological species (Species Fungorum 2022), 4 species with molecular data.
Saprobic on decaying wood in terrestrial habitats, widespread in temperate to tropical regions. Sexual morph: Ascomata superficial, solitary, globose-subglobose, ostiolate, surrounded by dark setae. Peridium thick-walled, dark brown to black, composed of cells of textura angularis. Hamathecium composed of cellular hyaline pseudoparaphyses, embedded in a mucilaginous matrix. Asci 8-spored, bitunicate, fissitunicate, cylindric-clavate to broadly clavate, short-pedicellate, rounded at apex. Ascospores 2–3- seriate, hyaline, narrowly fusiform, broad at supra-median, slightly curved, multiseptate, slightly constricted at septum, with asymmetrical ends. Asexual morph: hyphomycetous, helicosporous, also producing a dictyochlamydosporous state in culture and often on wood. Dictyochlamydospores broadly oblong, elongate, multiseptate, at first reddish-brown, becoming black (adapted from Boonmee et al. 2011).
Type species: Chlamydotubeufia huaikangplaensis Boonmee & K.D. Hyde
Notes: Chlamydotubeufia is characterised by superficial, solitary, globose-subglobose ascomata, bitunicate, fissitunicate, cylindric-clavate to broadly clavate asci, hyaline, narrowly fusiform ascospores. The asexual morph is hyphomycetous, helicosporous forming dictyochlamydosporous state in culture. Chlamydotubeufia differs from Helicoma in that the latter form rather long conidiophores (Zhao et al. 2007, Boonmee et al. 2011). Boonmee et al. (2011) transferred H. chlamydosporum and H. depressispora to Chlamydotubeufia based on morphology and phylogenetic analyses. Chlamydotubeufia also resembles Intercalarispora in having similar morphology of chlamydospores. Boonmee et al. (2011) reported that Intercalarispora might be an earlier name for Chlamydotubeufia but this is not proven by cultural studies (Boonmee et al. 2011). Chlamydotubeufia differs from Intercalarispora in that the latter has irregular septation in the conidia while those of Chlamydotubeufia are distinctly transverse with up to two vertical septa (Boonmee et al. 2011). Chlamydotubeufia is morphologically and phylogenetically a distinct genus in Tubeufiaceae. Molecular markers available for Chlamydotubeufia include ITS, LSU, SSU, TEF-1 and RPB2.
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