Nothotrimmatostroma
Nothotrimmatostroma Crous, in Crous et al., Stud. Mycol. 94: 206 (2019).
Index Fungorum number: IF 832033; Facesoffungi number: FoF 08530, 2 morphological species (Species Fungorum 2022), 2 species with molecular data.
Associated with leaf spot. Sexual morph: Unknown. Asexual morph: Conidiomata sporodochial, dark brown to black, dry, powdery, confined to the lesions. Conidiophores branched at base, pale brown, smooth, loosely aggregated, pale brown. Conidiogenous cells terminal, cylindrical to doliiform, holothallic, pale brown. Conidia formed in basipetal chains, smooth, medium brown, 4- celled, consisting of two basal cells with truncate lateral sides (adhesion scars present when catenate), each giving rise to a secondary globose apical cell, that may extend and develop additional septa; septa dark brown and thick-walled between the primary and secondary cells (adapted from Crous et al. 2019).
Type species: Nothotrimmatostroma bifarium (Gadgil & M.A. Dick) Crous
Notes: Nothotrimmatostroma is characterised by sporodochial, dark brown to black conidiomata, pale brown, smooth, loosely aggregated conidiophores, terminal, cylindrical to doliiform, holothallic conidiogenous cells and medium brown, 4-celled, conidia. Nothotrimmatostroma resembles Neotrimmatostroma in forming separate leaf spots which merge on maturity, medium brown, subcircular with indistinct margins, amphigenous, with conspicuous olivaceous brown sporodochia appearing as lesions of sooty mold. Nothotrimmatostroma can de differentiated from Neotrimmatostroma only based on phylogenetic analyses. Nothotrimmatostroma is a distinct genus in Teratosphaeriaceae. Molecular markers available in Nothotrimmatostroma include ITS and LSU.
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