Bimuria D. Hawksw., Chea & Sheridan, N.Z. Jl Bot.

Wijesinghe, Subodini N., Wanasinghe, Dhanushka N., Maharachchikumbura, Sajeewa S. N., Wang, Yong, Al-Sadi, Abdullah M. & Hyde, Kevin D., 2020, Bimuria omanensis sp. nov. (Didymosphaeriaceae, Pleosporales) from Oman, Phytotaxa 449 (2), pp. 97-108 : 103-104

Bimuria D. Hawksw., Chea & Sheridan, N.Z. Jl Bot. 17(3): 267 (1979) amend.

Saprobic in terrestrial habitats. Sexual morph: See Hawksworth et al. (1979) and Ariyawansa et al. (2014a). Asexual morph: Coelomycetous. Conidiomata pycnidial, arise on mycelia as black spore mass, aggregated clusters are scattered, irregular and superficial to semi-immersed. Conidiomatal wall composed of thick walled, pale to dark brown cells of textura angularis. Conidiogenous cells enteroblastic, phialidic, ampulliform or short cylindrical, determinate, sometimes cylindrical, elongated neck, rough and hyaline. Conidia oblong to cylindrical, 1-septate, smooth and thin-walled, pale brown to hyaline.

Type species:— Bimuria novae -zelandiae D. Hawksw., Chea & Sheridan, N.Z. Jl Bot. 17(3): 268 (1979)

Notes:—Hawksworth et al. (1979)introduced Bimuria and it was placed in Pleosporaceae based on its sexual morphology. Based on phylogenetic analysis of SSU, LSU, RPB2 and TEF1-α sequence data, Schoch et al. (2009) and Ariyawansa et al. (2014a) confirmed that the Bimuria novae-zelandiae (CBS 107.79) should be placed in Montagnulaceae (= Didymosphaeriaceae ) and related to Tremateia . In this current study, we observed that our novel strain (SQUCC 15280) clusters with Bimuria novae-zelandiae with strong bootstrap support in our phylogenetic analyses ( Fig. 1 ). Therefore, we conclude that it is appropriate to consider our isolate as a species in Bimuria . Bimuria was only known from its sexual morph and we amend Bimuria in order to accommodate its coelomycetous asexual morph from our novel taxonomic account.

Figures

FIGURE 1. RAxML tree based on analysis of a combined dataset of LSU, ITS and TEF1-α partial sequence data. Bootstrap support values for ML and MP equal to or greater than 60 %, Bayesian posterior probabilities (PP) equal to or greater than 0.95 are defined as ML/PP/MP above the nodes. Genera, where known are indicated with coloured blocks. The new isolate is in blue. The type strains are in bold. The scale bar represents the expected number of nucleotide substitutions per site. Bambusistroma didymosporum (MFLU 15-0057, MFLU 15-0058) is used as the outgroup taxon.