Parateratosphaeria
Parateratosphaeria Quaedvl. & Crous, in Quaedvlieg et al., Persoonia 33: 28 (2014).
Index Fungorum number: IF 807818; Facesoffungi number: FoF 07025, 6 morphological species (Species Fungorum 2022), 6 species with molecular data.
Foliicolous, plant pathogenic. Sexual morph: Ascomata amphigenous, immersed, substomatal, black, singular, gregarious; pyriform or globose, with a non-periphysate to periphysate papillate ostiole, becoming erumpent through the stomatal pore. Peridium with 3–4 layers of compressed textura angularis that comprise an outer stratum of dark brown thick-walled cells with large lumina that become hyaline and thin-walled in the inner stratum. Paraphyses absent. Asci obclavate to cylindrical, pedicel short, straight, tapering to a narrow-rounded apex with an indistinct ocular chamber, 8-spored, bitunicate with fissitunicate dehiscence. Ascospores overlapping bi- to multiseriate,uniseptate, fusiform to ellipsoidal, with obtuse ends, straight, hyaline, guttulate, surrounded by an inconspicuous mucilaginous sheath. Germinating ascospores become brown and verruculose. Asexual morph: Unknown (adapted from Quaedvlieg et al. 2014).
Type species: Parateratosphaeria bellula (Crous & M.J. Wingf.) Quaedvl. & Crous
Notes: Parateratosphaeria morphologically resembles Teratosphaeria in having ascospores which turn brown and verruculose during germination and some species have a mucoid sheath. Parateratosphaeria can be distinguished from Teratosphaeria based on DNA sequence data. Molecular markers available for Parateratosphaeria are ITS, LSU, SSU, BTUB, RPB2 and TEF-1.
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