Blennoria
Blennoria Moug. & Fr., in Fries, Syst. orb. veg. (1825)
Ascomycota, genera incertae sedis
Saprobic or parasitic on the host plant. Sexual morph: undetermined. Asexual morph: Conidiomata dark brown, pycnidial, amphigenous, scattered to gregarious or confluent, semi-immersed, oval, circular to irregular, multilocular, divided into several locules with vertical columns of tissue, glabrous. Ostiole papillate. Conidiomatal wall composed of thick-walled, brown to hyaline cells of textura angularis to textura porrecta. Conidiophores arising from the inner cells of the locular walls, hyaline, cylindrical, branched, septate, smooth-walled. Conidiogenous cells hyaline, enteroblastic, phialidic, cylindrical, integrated or discrete, determinate, smooth-walled, with a minute apical channel. Conidia hyaline, cylindrical, with obtuse apex and abruptly tapered base, unicellular, smooth-walled.
Type species: Blennoria buxi Fr., Syst. orb. veg. (1825)
Notes: Blennoria was regarded as a synonym of Ceuthospora Grev. Sutton (1972b) and Morgan-Jones et al. (1972b) demonstrated that the genera could be distinguished by the form of conidiomata and conidia. Blennoria has eustromatic conidiomata and cylindrical conidia without apical appendage, whereas Ceuthospora has pseudostromatic conidiomata and cylindrical conidia bearing a minute, fan-shaped, mucilaginous apical appendage. Kirk et al. (2013) accepted Blennoria as a legitimate name, and we follow this concept. Fresh collections are needed and subjected to DNA sequence analyses to determine its placement.
Distribution: France, UK, Switzerland.
Blennoria buxi (redrawn from Morgan-Jones et al. 1972) a Conidia. b Vertical section of conidioma. c Conidiophores, conidiogenous cells and developing conidia.
Reference:
Li WJ, McKenZie EHC, Liu JK, Bhat DJ, Dai DQ, Caporesi E, Tian Q, Maharachcikumbura SSN, Luo ZL, Shang QJ, Zhang JF, Tangthirasunun N, Karunarathna SC, Xu JC, Hyde KD (2020) Taxonomy and phylogeny of hyaline-spored coelomycetes. Fungal Diversity 100: pages279–801.
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