Taxon Account

Navicula cryptotenella Lange-Bertalot; 1985; 62-63

Key references

Krammer K., Lange-Bertalot H. 1985. Naviculaceae Neue und wenig bekannte Taxa, neue Kombinationen und Synonyme sowie Bemerkungen zu einigen Gattungen. 9. Bibliotheca Diatomologica. 230 pp

Morphology

Size
14-40 µm long, 5-7 µm wide (Krammer & Lange-Bertalot 1985).

Shape
Lanceolate with acutely rounded apices.

Symmetry
Isopolar, bilaterally symmetrical.

Striae
Radiate in the central part of the valve becoming convergent towards the apices; central shorter stria on each side. (12)14-16 in 10 µm (Krammer & Lange-Bertalot 1985).

Axial area
Well defined, narrow linear.

Central area
Small, rounded, only slightly expanded.

Raphe
Raphe straight, proximal endings positioned relatively close to each other, expanded and slightly deflected to one side, terminal fissures hooked.

Literature

References are given in chronological order.

Reference
Citation
Krammer K., Lange-Bertalot H. 1985. Naviculaceae Neue und wenig bekannte Taxa, neue Kombinationen und Synonyme sowie Bemerkungen zu einigen Gattungen. 9. Bibliotheca Diatomologica. 230 pp Morphology; Illustrations; Ecology; Taxonomy; Type Illustration
Fukushima H., Ko-Bayashi T., Terao K., Yoshitake S. 1986. Morphological variability of Navicula radiosa Kütz. f. nipponica Skv. and var. tenella (Bréb.) Grun. (Navicula cryptotenella Lange-Bertalot). Diatom. 2: 75-82. Morphology; Illustrations
Hofmann G., Werum M., Lange-Bertalot H. 2011. Diatomeen im Süßwasser-Benthos von Mitteleuropa. A.R.G. Gantner, Ruggell. 908 pp Morphology; Ecology; Illustrations

Similar Species

Similar species not published on this website:

This page should be cited as:

Cox E. J. Navicula cryptotenella Lange-Bertalot; 1985; 62-63. In: Jüttner I., Bennion H., Carter C., Cox E.J., Ector L., Flower R., Jones V., Kelly M.G., Mann D.G., Sayer C., Turner J. A., 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=2575. [Accessed:  ].

Image Gallery

Record last modified: 27/12/2020