Taxon Account

Navicula heimansioides Lange-Bertalot; 1993; 113

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

Chudaev D., Jüttner I., Glushchenko A., Kulikovskiy M., Gurung S., Williams D.M. 2020. On the geographical distribution of Navicula nielsfogedii J.C.Taylor & Cocquyt. Diatom Research. 35(2): 185-192.

Morphology

Size
27.5-32 µm long, 5-6 µm wide (UK population), 30-50 µm long, 5-6 wide (Lange-Bertalot 1993).

Shape
Valves narrow lanceolate, margins taper gradually from centre to slightly protracted rounded ends.

Symmetry
Isopolar, bilaterally symmetrical.

Striae
Radiate in valve centre, becoming convergent towards apices, 16-17 in 10 µm (UK population), 14-16 (Lange-Bertalot 1993).

Axial area
Narrow, linear.

Central area
Rounded to rhombic, more or less symmetrical.

Raphe
Raphe filiform with expanded central pores.


SEM morphology
Internally, accessory rib which does not widen in valve centre.

Literature

References are given in chronological order.

Reference
Citation
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; Description; Taxonomy; Type Illustration
Lange-Bertalot H. 2001. Navicula sensu stricto. 10 Genera Separated from Navicula sensu lato. Frustulia. Ruggell, A.R.G. Gantner. 526 pp Morphology; Type Illustration; Ecology
Krammer K., Lange-Bertalot H. 2004. Süßwasserflora Mitteleuropas. Bacillariophyceae. 4. Teil. Achnanthaceae. Kritische Ergänzungen zu Achnanthes s.l., Navicula s.str., Gomphonema. Eds Ettl H., Gärtner G., Heynig H., Mollenhauer D., Gustav Fischer Verlag, Stuttgart. 468 pp Illustrations
Chudaev D., Jüttner I., Glushchenko A., Kulikovskiy M., Gurung S., Williams D.M. 2020. On the geographical distribution of Navicula nielsfogedii J.C.Taylor & Cocquyt. Diatom Research. 35(2): 185-192. Morphology; Illustrations;
This page should be cited as:

Jüttner I., Chudaev D. Navicula heimansioides Lange-Bertalot; 1993; 113. 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=2579. [Accessed:  ].

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Record last modified: 27/12/2020