Flabellascus Réblová, PLoS ONE 10(12): e0144616, 15 (2015)
MycoBank number: MB 814416; Index Fungorum number: IF 814416; Facesoffungi number: FoF 09739; 1 species with sequence data.
Type species – Flabellascus tenuirostris Réblová
Notes – The monotypic genus Flabellascus is characterized by tiny asci with ascogenous hyphae and ampulliform phialides with aseptate, allantoid conidia (Réblová et al. 2015b). The sexual morph of Flabellascus is similar to Jattaea and they are distinguished by the different asexual morphs. However, Flabellascus constitutes an independent clade within Calosphaeriaceae based on a multi-gene analysis (Réblová et al. 2015b; Fig. 7).
Figure 7 – Phylogram generated from maximum likelihood analysis based on combined tub2, act, ITS and LSU sequence data of Calosphaeriales, Togniniales, Jobellisiales and Tirisporallales. One hundred and fifteen strains are included in the combined analyses which comprised 2296 characters (572 characters for tub2, 269 characters for act, 586 characters for ITS, 869 characters for LSU) after alignment. Three species of Ophiostomataceae are used as outgroup taxa. Single gene analyses were also carried out and the phylogenies were similar in topology and clade stability. The best RAxML tree with a final likelihood value of -29642.219830 is presented. Estimated base frequencies were as follows: A = 0.222849, C = 0.289953, G = 0.265413, T = 0.221786; substitution rates AC = 1.361161, AG = 3.471108, AT = 1.335451, CG = 1.139165, CT = 4.985065, GT = 1.000000; gamma distribution shape parameter a = 1.412987. Bootstrap support values for ML greater than 60% are given near the nodes. Ex-type strains are in bold. The newly generated sequences are indicated in blue.