Taxon Account

Navicula densilineolata (Lange-Bertalot) Lange-Bertalot; 1993; 107

Key references

Lange-Bertalot H. 1993. 85 neue Taxa und über 100 weitere neu definierte Taxa ergänzend zur Süßwasserflora von Mitteleuropa Vol.2/1-4. Bibliotheca Diatomologica 27, J. Cramer, Berlin, Stuttgart. 454 pp

Morphology

Size
29-41 µm long, 6-7 µm wide (UK population), 28-60 µm long, 6-7.5 wide (Lange-Bertalot 2001).

Shape
Valves narrowly lanceolate, gradually tapering towards acutely rounded ends.

Symmetry
Isopolar, bilaterally symmetrical.

Striae
Radiate in valve centre, becoming slightly convergent towards apices, 12-14 in 10 µm (UK population), 10-13 in 10 µm (Lange-Bertalot 2001). Areolae clearly discernible in LM, 29-32(34) in 10 µm (UK population), 27-30 in 10 µm (Lange-Bertalot 2001).

Axial area
Narrow, linear, slightly widening towards centre.

Central area
Small, rhombic.

Raphe
Raphe filiform with central pores turned slightly to the secondary valve side.

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; Description; Taxonomy; Illustrations
Lange-Bertalot H. 1993. 85 neue Taxa und über 100 weitere neu definierte Taxa ergänzend zur Süßwasserflora von Mitteleuropa Vol.2/1-4. Bibliotheca Diatomologica 27, J. Cramer, Berlin, Stuttgart. 454 pp Taxonomy; Type Illustration; Morphology; Ecology;
Lange-Bertalot H. 2001. Navicula sensu stricto, 10 genera seperated from Navicula sensu lato, Frustulia. 2. Lange-Bertalot H. (ed.), Diatoms of Europe, Diatoms of the European Inland waters and comparable habitats. A.R.G. Gantner Verlag K.G., Ruggell. 526 pp Morphology; Illustrations
This page should be cited as:

Chudaev D., Jüttner I. Navicula densilineolata (Lange-Bertalot) Lange-Bertalot; 1993; 107. 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=4649. [Accessed:  ].

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Record last modified: 27/12/2020