taxonID	type	description	language	source
0C56A434C38152C7BCE65072940145A6.taxon	description	Figs 3, 4 Chinese name: 长白山对齿藓	en	Wu, Ting-Ting, Feng, Chao, Bian, Tao, Zhang, Guo-Li, Kou, Jin, Xiao, Hong-Xing (2023): Didymodon changbaiensis (Pottiaceae, Musci), a new species from Changbai Mountain, China and its phylogenetic position based on molecular data. PhytoKeys 221: 147-159, DOI: http://dx.doi.org/10.3897/phytokeys.221.96661, URL: http://dx.doi.org/10.3897/phytokeys.221.96661
0C56A434C38152C7BCE65072940145A6.taxon	materials_examined	Type. China. Jilin Province: Changbai Mountain, 42 ° 3 ' 35.316 " N, 128 ° 3 ' 51.516 " E, on soil over rocks, elevation 1864 m, 2 September 2020, Jin Kou 20200902234 (holotype: NENU!; isotype: NMAC 20200902234!).	en	Wu, Ting-Ting, Feng, Chao, Bian, Tao, Zhang, Guo-Li, Kou, Jin, Xiao, Hong-Xing (2023): Didymodon changbaiensis (Pottiaceae, Musci), a new species from Changbai Mountain, China and its phylogenetic position based on molecular data. PhytoKeys 221: 147-159, DOI: http://dx.doi.org/10.3897/phytokeys.221.96661, URL: http://dx.doi.org/10.3897/phytokeys.221.96661
0C56A434C38152C7BCE65072940145A6.taxon	diagnosis	Diagnosis. It differs from the otherwise similar D. tibeticus in its costa without a ventral costal pad of cells and ventral stereids, transverse section of costa round at mid-leaf and laminal cells with elliptical papillae over the transverse walls between two immediately adjacent cells.	en	Wu, Ting-Ting, Feng, Chao, Bian, Tao, Zhang, Guo-Li, Kou, Jin, Xiao, Hong-Xing (2023): Didymodon changbaiensis (Pottiaceae, Musci), a new species from Changbai Mountain, China and its phylogenetic position based on molecular data. PhytoKeys 221: 147-159, DOI: http://dx.doi.org/10.3897/phytokeys.221.96661, URL: http://dx.doi.org/10.3897/phytokeys.221.96661
0C56A434C38152C7BCE65072940145A6.taxon	description	Description. Plants to 1 cm high, growing in dense turfs, brown-reddish below, green above. Stems erect, frequently branched, in transverse section rounded, central strand weakly differentiated, hyalodermis and sclerodermis absent; axillary hairs filiform, usually 3 - 4 cells long, with one brown basal cell and hyaline upper ones. Rhizoidal tubers absent. Leaves appressed when dry, erect when moist, ovate or ovate-triangular with a broad base, 0.85 - 1.3 x 0.43 - 0.65 mm, channelled ventrally in the upper part; lamina completely unistratose, reddish-orange in KOH; apex acuminate to acute, not cucullate; margins entire, plane, completely unistratose; costa 51.7 - 86.2 µm wide at base, percurrent to short-excurrent; ventral cells of costa in upper middle part of leaf quadrate or subquadrate, sparsely papillose; dorsal cells of costa in upper middle part of leaf quadrate or subquadrate, sparsely papillose; transverse section of costa round at mid-leaf; with 3 - 4 guide cells in one layer, absence of ventral stereids, 1 - 2 layers of dorsal stereids, without hydroids, ventral surface cells bulging, not forming a pad of a single layer of cells, papillose, dorsal surface cells papillose; upper and middle laminal cells subquadrate, hexagonal or shortly rectangular, 5.5 - 11.1 x 8.9 - 12.2 µm, dorsally with one low elliptical papilla over the transverse walls which reaches the two immediate cells; basal cells weakly differentiated, smooth, basal juxtacostal cells hexagonal or short-rectangular, 11.1 - 20 x 5.56 - 10 µm, evenly thick-walled; basal marginal cells oblate, 5.56 - 10 x 6.67 - 10 µm, with regular thickened transverse walls and thin longitudinal walls. Gemmae absent. Dioicous. Sporophyte unknown.	en	Wu, Ting-Ting, Feng, Chao, Bian, Tao, Zhang, Guo-Li, Kou, Jin, Xiao, Hong-Xing (2023): Didymodon changbaiensis (Pottiaceae, Musci), a new species from Changbai Mountain, China and its phylogenetic position based on molecular data. PhytoKeys 221: 147-159, DOI: http://dx.doi.org/10.3897/phytokeys.221.96661, URL: http://dx.doi.org/10.3897/phytokeys.221.96661
0C56A434C38152C7BCE65072940145A6.taxon	etymology	Etymology. The specific epithet refers to Changbai Mountain, the type locality.	en	Wu, Ting-Ting, Feng, Chao, Bian, Tao, Zhang, Guo-Li, Kou, Jin, Xiao, Hong-Xing (2023): Didymodon changbaiensis (Pottiaceae, Musci), a new species from Changbai Mountain, China and its phylogenetic position based on molecular data. PhytoKeys 221: 147-159, DOI: http://dx.doi.org/10.3897/phytokeys.221.96661, URL: http://dx.doi.org/10.3897/phytokeys.221.96661
