Pararoussoella
Pararoussoella Wanas., E.B.G. Jones & K.D. Hyde, in Wanasinghe et al., Fungal Diversity: 10.1007/s13225-018-0395-7, [169] (2018).
Index Fungorum number: IF 554218; Facesoffungi number: FoF 03798, 5 morphological species (Species Fungorum 2022), 5 species with molecular data.
Saprobic in terrestrial habitats. Sexual morph: Ascomata scattered or aggregated in groups, immersed, globose, ostiolate. Ostioles central, papillate, black. Peridium thick, comprising 6–8 layers, consisting of a narrow, hyaline, non-descript inner layer of small and thin-walled cells tending to be thicker towards the ostiole and a pigmented outer layer with cells textura angularis, with walls becoming thicker towards the outside. Hamathecium comprising numerous, filamentous, branched septate, pseudo paraphyses. Asci 8-spored, bitunicate, fissitunicate, cylindrical, with a stipe, walls narrow, apex rounded with a minute ocular chamber. Ascospores uniseriate to overlapping uniseriate, narrowly ellipsoid, straight to slightly curved, with 1-septate, at first hyaline to pale brown, turning dark brown when mature, ends remaining cone-shaped, rounded at both ends, guttulate, rough, with irregular longitudinal striations, with or without a sheath. Asexual morph: Unknown (adapted from Wanasinghe et al. 2018).
Type species: Pararoussoella rosarum Wanas., E.B.G. Jones & K.D. Hyde
Notes: Pararoussoella resembles Roussoella in having ascospores with irregular longitudinal striations. But, Roussoella and Pararoussoella are not phylogenetically related. Molecular markers available for Pararoussoella include ITS, LSU, SSU, RPB2 and TEF-1.
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