Didymodonchangbaiensis (Pottiaceae, Musci), a new species from Changbai Mountain, China and its phylogenetic position based on molecular data

Ting-Ting Wu; Chao Feng; Tao Bian; Guo-Li Zhang; Jin Kou; Hong-Xing Xiao

doi:10.3897/phytokeys.221.96661

Didymodonchangbaiensis (Pottiaceae, Musci), a new species from Changbai Mountain, China and its phylogenetic position based on molecular data

PhytoKeys. 2023 Mar 13:221:147-159. doi: 10.3897/phytokeys.221.96661. eCollection 2023.

Authors

Ting-Ting Wu¹, Chao Feng², Tao Bian¹, Guo-Li Zhang³, Jin Kou¹, Hong-Xing Xiao¹

Affiliations

¹ School of Life Sciences, Jilin Provincial Key Laboratory of Chemistry and Biology of Changbai Mountain Natural Drugs, Northeast Normal University, Changchun 130024, China Northeast Normal University Changchun China.
² College of Grassland, Resources and Environment, Key Laboratory of Grassland Resources, Ministry of Education P.R. of China, Key Laboratory of Forage Cultivation, Processing and High Efficient Utilization of Ministry of Agriculture, Inner Mongolia Agricultural University, Hohhot 010011, China Inner Mongolia Agricultural University Hohhot China.
³ Faculty of Life Science, Tangshan Normal University, Tangshan 063000, China Tangshan Normal University Tangshan China.

Abstract

Changbai Mountain, located in northeast China, is one of the areas with the most complete natural ecosystem preservation in China. A new species, Didymodonchangbaiensis C.Feng, J.Kou, H.-X. Xiao & T.-T.Wu from north slope of Changbai Mountain in Jilin Province of China is described and illustrated. It is characterised by ovate or ovate-lanceolate leaves that are appressed when dry, acute leaf apex, lamina red or reddish-orange with KOH, unistratose lamina throughout, plane and unistratose leaf margins, percurrent costa with one layer of guide cells and without ventral stereids, upper and middle laminal cells with elliptical papillae over the transverse walls between two immediately adjacent cells and basal laminal cells not differentiated from the median cells. Our morphological analyses and molecular results, based on DNA sequences of ITS, rps4 and trnM-trnV, conﬁrm that D.changbaiensis is revealed to be sister to D.daqingii J. Kou, R.H. Zander & C. Feng. This new species is compared with similar species and its phylogenetic position and ecology are discussed.

Keywords: Asia; northeast China; phylogenetic analysis; taxonomy.

Ting-Ting Wu, Chao Feng, Tao Bian, Guo-Li Zhang, Jin Kou, Hong-Xing Xiao.

Grants and funding

This research was funded by Natural Science Foundation of China (grant no. 42001045, 32060051, 31660051), Shenzhen Key Laboratory of Southern Subtropical Plant Diversity (grant no. 99203030), Natural Science Foundation of Inner Mongolia (grant no. 2022MS03066) and the Innovative team of China's Ministry of Education-Research on the sustainable use of grassland resources (IRT_17R59).