taxonID	type	description	language	source
312E4BC102F652C9A08C561211035312.taxon	description	Figs 2, 3, 4, 5, 6, 7	en	Yuan, Li, Liu, Bing, Rioual, Patrick, Long, Ji-Yan, Peng, Yu-Mei (2022): Diatoma sinensis: a new diatom species (Bacillariophyta) found in the brackish Lake Qinghai, China. PhytoKeys 210: 93-108, DOI: http://dx.doi.org/10.3897/phytokeys.210.90438, URL: http://dx.doi.org/10.3897/phytokeys.210.90438
312E4BC102F652C9A08C561211035312.taxon	description	Description. LM (Fig. 2). Living cells always observed in girdle view are rectangular (Fig. 2 A, arrows). Cell depth (along the pervalvar axis, n = 35) 3.3 - 8.8 μm, always larger than valve width (2.0 - 3.0 μm). Valve linear-lanceolate, with subcapitate to capitate apices (Fig. 2 B-R). Valve dimensions (n = 69): 24 - 88 μm long, 2.0 - 3.0 μm wide, transapical ribs unevenly spaced, 8 - 13 in 10 μm. Striae and sternum not resolved under LM. SEM (Figs 3 - 7). Frustule and valvocopula view: Frustule rectangular in girdle view (Fig. 3 A); normal vegetative frustule composed of epivalve, hypovalve, and six girdle bands (Fig. 3 B-D). Four girdle bands associated with the epivalve (Fig. 3 B-D, B 1 to B 4), two with hypovalve (Fig. 3 B-D, B 5 and B 6), yielding in a 4: 2 configuration of girdle bands in non-dividing vegetative cells. Girdle bands open and having a closed-open-closed-open-closed-open arrangement at one apex in a complete cell (Fig. 3 C-D). Striae continuing onto deep mantle and no blisters present (Fig. 3 B-D). Valvocopula open at one pole, always furnished with two rows of poroids, but sometimes with very short isolated third row of poroids (Fig. 4 D, arrow). Valvocopula forming an open ring with the same shape as the valve outline, closely attached to the mantle interior, surrounding the valve margin (Fig. 4 B). Advalvar row of valvocopula poroids of each valvocopula bisecting pars interior from exterior, located at mid-line, pars media (Fig. 3 C-D), inner row of poroids and the very short isolated third row located on pars exterior (Figs 4 D, 5 C-E). Valvocopula with crenulated edge attaching to valve, internally visible over virgae (Fig. 4 G-H, arrows). Valvocopula open ends hyaline (with no ornamentation) (Figs 4 H, 5 C, 5 F). Poroid density of the valvocopula is 66 - 70 in 10 μm. External view: Valve linear-lanceolate, with subcapitate to capitate apices (Fig. 6 A-B). Valve surface smooth, spines absent. Striae uniseriate, perpendicular to a narrow central sternum, 43 - 54 in 10 μm. Striae in groups of two to six separated by transverse ribs continuing down the vertical mantle (Figs 3 A-D, 6 C-H). More closely spaced rows of pores occurring at both apices, forming rather distinct apical pore fields (Fig. 6 C, E, F, H). Two rimoportulae per valve, one per pole, with slit-like opening externally (Fig. 6 C, E, F, H). Internal view: Valve linear-lanceolate, with subcapitate to capitate apices (Fig. 7 A-B). Transapical ribs, mostly primary, part of internal valve surface (Fig. 7 A-H). Rimoportula prominent, two per valve (n = 22), present at both apices, possessing bilabiate structure (Fig. 7 C, E, F, H). Rimoportula positions variable, either embedded in a transapical rib (Fig. 7 C, E) or located among striae (Fig. 7 F, H).	en	Yuan, Li, Liu, Bing, Rioual, Patrick, Long, Ji-Yan, Peng, Yu-Mei (2022): Diatoma sinensis: a new diatom species (Bacillariophyta) found in the brackish Lake Qinghai, China. PhytoKeys 210: 93-108, DOI: http://dx.doi.org/10.3897/phytokeys.210.90438, URL: http://dx.doi.org/10.3897/phytokeys.210.90438
312E4BC102F652C9A08C561211035312.taxon	etymology	Etymology. Named after China, where the species was found.	en	Yuan, Li, Liu, Bing, Rioual, Patrick, Long, Ji-Yan, Peng, Yu-Mei (2022): Diatoma sinensis: a new diatom species (Bacillariophyta) found in the brackish Lake Qinghai, China. PhytoKeys 210: 93-108, DOI: http://dx.doi.org/10.3897/phytokeys.210.90438, URL: http://dx.doi.org/10.3897/phytokeys.210.90438
