Taxon Account

Cymbella neocistula Krammer; 2002; 94, 95

Key references

Krammer K. 2002. Cymbella. Lange-Bertalot H. (ed), Diatoms of Europe, Diatoms of the European Inland Waters and Comparable Habitats, Vol.3, A.R.G. Gantner Verlag K.G., Ruggell. 584 pp

Morphology

Size
34-110 µm long, 12-19 µm wide (Krammer 2002).

Shape
Valves with convex dorsal margin, ventral margin slightly convex in centre of valve, broadly rounded ends, not or very slightly protracted.

Symmetry
Dorsiventral, isopolar.

Striae
Striae slightly radiate, more strongly radiate near valve ends, 9-10 in 10 µm in valve centre, 12 in 10 µm towards valve ends, areolae visible in LM, 22-24 in 10 µm (UK population).

Axial area
Narrow linear, approximately in centre of valve.

Central area
Round, approximately 1/3 of valve width.

Raphe
Raphe lateral, becoming slightly reverse lateral towards proximal ends, filiform towards distal ends; proximal ends expanded, drop-shaped; dorsally deflected terminal raphe fissures.

Other features
2-4 stigmata on ventral side of central nodule.

Literature

References are given in chronological order.

Reference
Citation
Krammer K. 2002. Cymbella. Lange-Bertalot H. (ed), Diatoms of Europe, Diatoms of the European Inland Waters and Comparable Habitats, Vol.3, A.R.G. Gantner Verlag K.G., Ruggell. 584 pp Morphology; Description; Taxonomy; Type Illustration
Li Y., Gong Z., Shen J. 2007. Freshwater diatoms of eight lakes in the Yunnan Plateau, China. Journal of Freshwater Ecology. 22(1): 169-171. Ecology
Vishnyakov V.S., Kulikovskiy M.S., Dorofeyuk N.I., Genkal S.I. 2015. Morphology and distribution of Cymbella neocistula Krammer and Cymbella nepalensis (Jüttner & Van de Vijver) Vishnjakov stat. nov. (Bacillariophyceae) in water ecosystems of South Siberia and Mongolia. Inland Water Biology. 8(4): 325-333. Morphology; Illustrations; Ecology

Similar Species

Similar species not published on this website:

Cymbella cymbiformis Agardh; 1830; 10

This page should be cited as:

Jüttner I., Levkov Z., Ector L. Cymbella neocistula Krammer; 2002; 94, 95. In: Jüttner I., Carter C., Chudaev D., Cox E.J., Ector L., Jones V., Kelly M.G., Kennedy B., Mann D.G., Turner J. A., Van de Vijver B., Wetzel C.E., Williams D.M.. Freshwater Diatom Flora of Britain and Ireland. Amgueddfa Cymru - National Museum Wales. Available online at https://naturalhistory.museumwales.ac.uk/diatoms/browsespecies.php?-recid=4357. [Accessed:  ].

Image Gallery

Record last modified: 06/12/2022