Arundellina Wanas., E.B.G. Jones & K.D. Hyde, in Hyde et al., Fungal Diversity 80: 61 (2016).
Index Fungorum number: IF 552132; Faceoffungi number: FoF 02208, 1 morphological species (Species Fungorum, 2022), 1 species with molecular data.
Saprobic on dead stem, sheaths and leaves. Sexual morph: Ascomata immersed, solitary, scattered, globose, dark brown to black, coriaceous, ostiolate. Ostiole papillate, black, smooth, filled with hyaline to pale brown cells. Peridium thin, with 4–5 layers, outer layer heavily pigmented, thick-walled, comprising reddish to dark brown cells of textura angularis, inner layer composed of hyaline thin-walled cells of textura angularis. Hamathecium comprising numerous, filamentous, branched, septate pseudoparaphyses. Asci 8-spored, bitunicate, fissitunicate, cylindrical to cylindric-clavate, pedicellate, thick-walled at the apex, with an ocular chamber. Ascospores overlapping 1–2-seriate, fusiform, slightly curved, widest in the center, 3–4 transversely septate, without vertical septa, constricted at the septa, initially hyaline, becoming golden-pale brown at maturity, ends remaining cone-shaped, with pointed ends, without a mucilaginous sheath. Asexual morph: Undetermined (Adapted from Wanasinghe et al., 2016).
Type species: Arundellina typhae Wanasinghe, E.B.G. Jones & K.D. Hyde
Notes: Arundellina was introduced by Wanasinghe et al. (2016) with A. typhae as the type species. Arundellina resembles Equiseticola, Galiicola, Loratospora, Paraleptosphaeria and Phaeosphaeria in Phaeosphaeriaceae, Neolophiostoma in Halotthiaceae and Mytilinidion in Mytilinidiaceae in having globose ascomata, cylindrical to cylindric-clavate asci and fusiform ascospores with 3–4 transverse septa but is a distinct genus phylogenetically and belongs to Lindgomycetaceae. Molecular markers available for Arundellina include LSU, SSU and ITS.
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