Togniniales Senan., Maharachch. & K.D. Hyde, ordo novus, Index Fungorum number: IF551049
Togniniales is a monotypic order in the class Sordariomycetes, subclass Diaporthomycetidae. It includes a single family Togniniaceae containing species saprobic on dead wood. Sexual morph: Ascomata lacking stromatic tissues, perithecial, with 1–3 necks. Hamathecium comprising paraphyses. Asci 8 or poly-sporous, unitunicate, clavate, with sessile bases, occurring on hyaline and branched ascogenous hyphae. Ascospores hyaline and unicellular. Asexual morph: Conidiophores long or short, branched or unbranched. Conidia hyaline, aseptate.
Type family: Togniniaceae Réblová et al.
Notes: Togniniales comprises a single family Togniniaceae based on phylogenetic analyses and it is similar to some members of Calosphaeriaceae in having perithecial ascomata and clavate, tiny asci with hyaline ascogenous hyphae and cylindrical to allantoid ascospores (Maharachchikumbura et al. 2015, Réblová et al. 2015b). Togniniaceae was placed in Diaporthales based on SSU and LSU gene analyses (Mostert et al. 2006). However, multi-gene analyses showed that Togniniales as an independent clade with Diaporthales and Calosphaeriales (Maharachchikumbura et al. 2015, 2016b, Réblová et al. 2015b, Huang et al. 2019). Species of this order have a worldwide distribution and are well-known pathogens of plants and animals (Rooney-Latham et al. 2005, Hoffmann & Voigt 2011, Kredics et al. 2011, Huang et al. 2018). The divergence time for Togniniales is estimated as 138 MYA (Fig. 2). Currently, there is one family and two genera in this order (Hyde et al. 2020).
Type species: Togninia minima (Tul. & C. Tul.) Berl.