Muyocopron Speg., Anal. Soc. cient. argent. 12(3): 113 (1881).

MycoBank number: MB 3294; Index Fungorum number: IF 3294; Facesoffungi number: FoF 01887; 48 morphological species (Species Fungorum 2020), 5 species with molecular data.

Type species: Muyocopron corrientinum Speg.

Notes: Muyocopron was introduced by Spegazzini (1881), with the type species M. corrientinum. Saccardo (1883) re-described this genus and placed it in Microthyriaceae. Muyocopron was synonymized under Ellisiodothis by von Arx and Müller (1954). Later, it was transferred to Botryosphaeriaceae and Microthyriaceae (von Arx and Müller 1975; Lumbsch and Huhndorf 2007, 2010). However, Muyocopron differs from members of Microthyriaceae by pseudothyriothecia with the peridial wall comprising two layers, pseudoparaphyses longer than the asci, and aseptate ascospores (Hyde et al. 2013; Mapook et al. 2016b). Molecular studies indicated that Muyocopron is distantly related to the Microthyriaceae (Wu et al. 2011a, b; Mapook et al. 2016b, and Fig. 56). The genus clustered with Dyfrolomycetaceae (Dyfrolomycetales), but as a distinct order (Hyde et al. 2013; Mapook et al. 2016b).

Fig. 56 Phylogram generated from maximum likelihood analysis (RAxML) of Muyocopronales based on ITS, LSU, rpb-2, SSU and tef1 sequence data. Maximum likelihood bootstrap values equal or above 70%, Bayesian posterior probabilities equal or above 0.90 (MLBS/PP) are given at the nodes. An original isolate number is noted after the species name. The tree is rooted to Acrospermum compressum (M151) and A. gramineum (M152). The ex-type strains are indicated in bold. Hyphen (-) represents support values below 70% MLBS and 0.90 PP