Cymbella pamirensis Z.Zhang & Rioual, 2017
publication ID |
https://doi.org/ 10.11646/phytotaxa.308.2.6 |
DOI |
https://doi.org/10.5281/zenodo.13702460 |
persistent identifier |
https://treatment.plazi.org/id/03B7A718-FF89-2263-FF4F-303EFBA2C4D6 |
treatment provided by |
Felipe |
scientific name |
Cymbella pamirensis Z.Zhang & Rioual |
status |
sp. nov. |
Cymbella pamirensis Z.Zhang & Rioual , sp. nov. ( Figs 2–34 View FIGURES 2–28 View FIGURES 29–34 )
LM observations ( Figs 2–28 View FIGURES 2–28 )
Valves strongly dorsiventral and triangular. Dorsal margin strongly arched. Ventral side nearly straight or slightly concave with slightly tumid center part. Ends variable from broadly round to weakly protracted. Valve dimensions (n=48): length 21 – 39 μm, width 7 – 10.5 μm, length/width ratio 2.6 – 4.3 (median 3.3), curvature value 0.038 – 0.083. Axial area linear, narrow, widening slightly at mid-valve on the dorsal side, almost in the middle of the valve. Central area generally lacking on the ventral side or very small ( Figs 27, 28 View FIGURES 2–28 ), but present dorsally where striae gradually shortened. Raphe branches lateral, becoming narrower near distal ends GoogleMaps ; terminal fissures curved dorsally. Striae moderately radiate in middle of valve. No isolated stigmata discernible under the LM.
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SubClass |
Bacillariophycideae |
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