Cylindrotrichum Bonorden

Cylindrotrichum Bonorden Notes. Cylindrotrichum oligospermum was originally used by (Corda) Bonord. to establish the genus Cylindrotrichum, while Reticulascus was introduced as a new genus with Reticulascus clavatus as the type species, and Cylindrotrichum clavatum as its asexual morph. Later, C. oligospermum, including C. hennebertii, was recombined and treated as a synonym of R. tulasneorum (Réblová et al. 2011). However, Réblová et al. (2016) recommended the continued use of Cylindrotrichum over Reticulascus due to its wider usage and greater number of associated names. Additionally, Blastophorum aquaticum was synonymized with Cylindrotrichum aquaticum by Luo et al. (2019). The asexual morph of Cylindrotrichum is characterized by the absence of setae. Conidiophores are cylindrical, straight to flexuous, solitary or in clusters, mononematous, and macronematous. Conidiogenous cells are usually monophialidic, rarely polyphialidic, with a hyaline to subhyaline collarette. Conidia are hyaline, cylindrical, slightly tapering with an obtuse apex, septate, guttulate, and smooth-walled (Luo et al. 2019; Crous et al. 2022). The sexual morph lacks stroma and produces superficial ascomata that are subglobose to conical, brown, and occur solitarily or in gregarious groups. The ostiolum is periphysate. Asci are eight-spored, cylindrical-clavate, unitunicate, and short-stipitate. Ascospores are hyaline, ellipsoidal to fusiform, and septate (Réblová et al. 2011; Luo et al. 2019). Cylindrotrichum (Reticulascus) strains has been reported from Australia, China, Czech Republic, France, Germany, and Netherlands as a saprobe on dead wood (Réblová et al. 2011; Luo et al. 2019; Crous et al. 2022).