Longiostiolum
Longiostiolum Doilom, Ariyaw. & K.D. Hyde, in Li et al., Fungal Diversity 78: 10.1007/s13225-016-0366-9, [55] (2016).
Index Fungorum number: IF 551899; Facesoffungi number: FoF 01881, 1 morphological species (Species Fungorum 2022), 1 species with molecular data.
Saprobic on dead bark of Tectona. Sexual morph: Ascostromata black, solitary to gregarious, scattered, immersed to semi-immersed, locules visible as white contents, uniloculate, globose to subglobose, with a central ostiole. Ostiole long, circular, central, periphysate. Peridium comprising two types of cell layers, outer layer black to brown, thick-walled cells of textura angularis, inner layer composed of hyaline and thin-walled cells of textura angularis. Hamathecium comprising numerous, hypha-like, filiform, septate, branched, cellular, pseudoparaphyses. Asci 8–spored, bitunicate, clavate, apically rounded with ocular chamber. Ascospores mostly overlapping 2-seriateto 3-seriate, hyaline when young later pale brown, fusoid to narrowly fusoid, with narrowly rounded ends, constricted at the center septa, with 7–10 transverse septa, smooth-walled. Asexual morph: Unknown (adapted from Li et al. 2016).
Type species: Longiostiolum tectonae Doilom, D.J. Bhat & K.D. Hyde
Notes: Longiostiolum is characterised by black, immersed to semi-immersed, uniloculate, globose to subglobose ascostromata, with white contents, with a long central ostiole and phragmosporous ascospores. Longiostiolum formed a distinct lineage within the suborder Massarineae (Li et al. 2016). Molecular markers available for Longiostiolum include LSU, SSU, ITS and TEF-1.
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