Angustimassarina
Angustimassarina Thambug., Kaz. Tanaka & K.D. Hyde, in Thambugala et al., Fungal Diversity: 10.1007/s13225-015-0348-3, [55] (2015).
Index Fungorum number: IF 551278; Facesoffungi number: FoF 01085, 12 morphological species (Species Fungorum 2022), 12 species with molecular data.
Fungicolous or saprobic on other fungi or dead wood in terrestrial habitats. Sexual morph: Ascomata solitary or gregarious, immersed to semi-immersed, becoming erumpent, coriaceous, dark brown to black, globose to subglobose, uniloculate, ostiolate. Ostiole central, cylindrical, papillate, and composed of pseudoparenchymatous cells, broad, well-developed, with a pore-like opening or through the cracks of host surface. Peridium composed of several layers of dark brown to lightly pigmented cells of textura angularis, fusing at the outside with the host ascomata. Hamathecium comprising 1–2.5 μm wide, septate, unbranched, cellular, pseudoparaphyses, embedded in a gelatinous matrix. Asci 8-spored, bitunicate, fissitunicate, cylindrical to cylindric-clavate, short pedicellate, rounded at the apex, with an ocular chamber. Ascospores 1–3-seriate, partially overlapping, hyaline, becoming ocher brown at maturity, fusiform to cylindrical or ellipsoidal-fusiform, mostly straight, widest at the centre and tapering toward the ends, 1(–3)-septate, constricted at the central septum, smooth-walled, verruculose at maturity, filled with a different sized guttule per cell and surrounded by a mucilaginous sheath. Asexual morph: Hyphomycetous. Conidiophores micronematous to semimacronematous, arising singly and not in sporodochia or synemmata, pale brown, unbranched, similar to the mycelial hypha. Conidiogenous cells integrated, terminal, holoblastic, short-cylindrical to elongate-cylindrical, brown to pale brown, smooth-walled. Conidia solitary, dry, elongateclavate, pale to dark brown, 1–3-septate, evenly pigmented, constricted at the septa, smooth-walled (adapted from Thambugala et al. 2015).
Type species: Angustimassarina populi Thambug. & K.D. Hyde
Notes: Angustimassarina is characterised by solitary or gregarious, immersed to semi-immersed, becoming erumpent dark brown to black, globose to subglobose ascomata, cylindrical to cylindric-clavate, short pedicellate asci and fusiform to cylindrical or ellipsoidal-fusiform, mostly straight, hyaline ascospores. Several authors have added new species to Angustimassarina (Tibpromma et al. 2017, Hyde et al. 2017, 2019, 2020, Wanasinghe et al. 2018). Angustimassarina is morphologically and phylogenetically a distinct genus in Amniculicolaceae. Molecular markers available for Angustimassarina are ITS, LSU, SSU, RPB2 and TEF-1.
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