Teratoramularia Videira, H.D. Shin & Crous, in Videira et al., Stud. Mycol. 83: 104 (2016).
Index Fungorum number: IF 816821; Facesoffungi number: FoF 07039, 4 morphological species (Species Fungorum 2022), 4 species with molecular data.
Saprobic on host substrate. Sexual morph: Unknown. Asexual morph: Mycelium consisting of smooth, branched, septate, hyaline hyphae, or swollen pale to brown hyphae. Conidiophores at times synnematal, but mostly reduced to conidiogenous cells or consisting of one supporting cell and conidiogenous cell. Conidiogenous cells hyaline, thin-walled, smooth, terminal or lateral, subcylindrical, straight, proliferating sympodially; conidiogenous loci conspicuous, thickened and darkened. Conidia are catenate, forming ramoconidia, intercalary conidia and terminal conidia. Conidia (type I) hyaline, thin-walled, smooth, subcylindrical, long, aseptate to uniseptate, with conspicuous hila, thickened and darkened. Conidia (type II), sometimes formed, brown, multiseptate, constricted at the septa, with thickened and darkened hila, germinating to form pigmented mycelium (adapted from Videira et al. 2016).
Type species: Teratoramularia persicariae Videira, H.D. Shin & Crous
Notes: Teratoramularia resembles Ramularia in having catenate, hyaline conidia with conspicuous hila, but differ by having conidiophores typically reduced to conidiogenous cells, and by forming very long intercalary conidia and ramoconidia that generally form instantly next to the conidiogenous cell. Pigmented mycelium, and brown multiseptate, conidia, constricted at their septa are also produced in culture. Teratoramularia is morphologically and phylogenetically a distinct and well-defined genus in Teratosphaeriaceae. Molecular markers available for Teratoramularia are ITS, LSU, Actin, Calmodulin, GAPDH, Histone, RPB2 and TEF-1.
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