Muyocopronales Mapook, Boonmee & K.D. Hyde, 2016

Mapook, Ausana, Hyde, Kevin D., Dai, Dong-Qin, Li, Junfu, Gareth Jones, E. B., Bahkali, Ali H. & Boonmee, Saranyaphat, 2016, Muyocopronales, ord. nov., (Dothideomycetes, Ascomycota) and a reappraisal of Muyocopron species from northern Thailand, Phytotaxa 265 (3), pp. 225-237 : 230

Muyocopronales Mapook, Boonmee & K.D. Hyde , ord. nov.

Index Fungorum number: IF551615, Faces of fungi number: FoF 01886

Type family: Muyocopronaceae (see Hyde et al. 2013 for description)

Saprobic, common on the surface of dried twigs, less common on leaves. Sexual morph: Ascomata superficial, coriaceous, appearing as circular, flattened, brown to dark brown spots covering the host, without a subiculum, with a poorly developed basal layer. Ostiole central without setose or hairy appendages. Peridium mostly comprising pseudoparenchymatous cells of textura angularis. Hamathecium comprising filiform, septate, branched, hyaline pseudoparaphyses. Asci 8-spored, bitunicate, saccate or broadly obpyriform, sometime oval to obovoid, with or without an ocular chamber. Ascospores multi-seriate to irregularly arranged, hyaline, oval to obovoid with obtuse ends, aseptate with or without granular appearance. Asexual morph: Undetermined.

Notes:— Muyocopronales forms a distinct order in the clade comprising Acrospermales and Dyfrolomycetales ( Fig. 1 ). The three orders differ as follows: Acrospermales (type Acrospermum ) has club-shaped, coriaceous ascomata, with narrow cylindrical asci, with the longest asci more than 1,000 μm, and filiform, multi-septate ascospores ( Riddle 1920, Minter et al. 2007, Hyde et al. 2013); Dyfrolomycetales (type Dyfrolomyces ) has immersed, coriaceous ascomata, with uniseriate, broadly fusiform multi-septate ascospores ( Pang et al. 2013, Hyde et al. 2013). Muyocopronales (type Muyocopron ) has superficial, flattened, carbonaceous, brittle ascomata, pseudoparaphyses that are longer than the asci and ellipsoidal to ovate, unicellular ascospores ( Hyde et al. 2013).

Figures

FIGURE 1.phylogram generatedfromRAxML basedon combinedLSUandSSU sequencedatatoestablish the neworderMuyocopronales. Bootstrap support values for maximum likelihood (ML,red) greaterthan 60% are given above the nodes and Bayesianposterior probabilities (PP, black) equal to or greater than 0.95 are indicated above the nodes. The ex-type and reference specimens are in bold.