Roussoella siamensis Phook., Jian K. Liu & K.D. Hyde, Phytotaxa 181(1): 18 (2014)

Hu, Hong Min, Liu, Li Li, Zhang, Xu, Lin, Yan, Shen, Xiang Chun, Long, Si Han, Kang, Ji Chuan, Wijayawardene, Nalin N., Li, Qi Rui & Long, Qing De, 2022, New species and records of Neomassaria, Oxydothis and Roussoella (Pezizomycotina, Ascomycota) associated with palm and bamboo from China, MycoKeys 93, pp. 165-191 : 165

Roussoella siamensis Phook., Jian K. Liu & K.D. Hyde, Phytotaxa 181(1): 18 (2014)

Fig. 6

Descriptions.

see Liu et al. (2014).

Specimens examined.

China, Guizhou Province, Guiyang Huaxi National Urban Wetland Park (26°2'23.04"N, 106°34'16.22"E) on decaying culms of B. bambusarum , 12 October 2021. Altitude: 1130 m, Y.P. Wu and H.M. Hu, 2021 HXGY03 (GMB0317; living culture GMBC0317) .

Other material examined.

China, Guizhou Province, Guiyang Huaxi National Urban Wetland Park (26°2'10.10"N, 106°34'16.10"E) on decaying culms of B. bambusarum , 15 October 2021. Altitude: 1145 m, Y.P. Wu and H.M. Hu, 2021 HXGY70 (GMB0391; living culture GMBC0391) .

Notes.

Phylogenetic analyses of the alignment combining ITS, LSU, rpb 2 and tef 1 show that GMB0317 cluster with R. siamensis (MFLU 13-0639) with the high support value (100% ML, 1 BYPP; Fig. 2 ). Characteristics of GMB0317 are consistent with those of R. siamensis , which was originally introduced from decaying bamboo culms in Thailand ( Liu et al. 2014) This species was first found in China.

Figures

Figure 2. RAxML tree of Roussoella and related genera based on a combined ITS, LSU, rpb 2 and tef 1 sequences dataset. Bootstrap support values for ML equal to or greater than 60 % and BYPP equal to or greater than 0.95 are given above the nodes. The new collections are in red bold, type strains are in bold.

Figure 6. Roussoella siamensis (GMB 0317) A stromata on host substrate B, C ascostromata on bamboo culm D cross-section of ascostromata E Longitudinal section of ascostromata F peridium G-I asci J pseudoparaphyses K-L culture on PDA M-P ascospores Scale bars: 0.5 mm (C-D); 50 μm (E); 10 μm (F-J, M-P).