Taxon Account

Navicula claytonii Carter; 1987; 633

Key references

Carter J.R. 1987. Navicula claytonii, a new diatom. Microscopy 35, 633-635..


9-18 µm long, 4-5 µm wide.

Lanceolate with broadly rounded apices, in girdle view rectangular.

Isopolar, bilaterally symmetrical.

Radiate at centre to almost parallel at apices; 2-3 shortened striae at the centre, sometimes one shortened central stria inserted on one side, 16-18 in 10 µm (UK population).

Axial area
Narrow linear.

Central area
Transversely elliptical to slightly angled subfascia, occupying up to half of the valve width.

Straight with slightly expanded, widely separated central endings; terminal ends hooked over valve apices.


References are given in chronological order.

Carter J.R. 1987. Navicula claytonii, a new diatom. Microscopy 35, 633-635.. Morphology; Taxonomy; Description; Type Illustration
Kelly M., Juggins S., Yallop M. 2009. Distribution and ecology of Navicula claytonii (J.R. Carter) M.G. Kelly, comb. nov. in Britain and Ireland. Diatom Research. 24(1): 237-244. Morphology; Ecology
Serieyssol K.K. 2009. Remarks and corrections to Diatom Research (2009) Volume. Diatom Research. 24(2): 495. Taxonomy
Lange-Bertalot H., Hofmann G. 2014. Navicula pierre-comperei sp. nov. (Bacillariophyta), a small benthic diatom recently observed in several Central European rivers. Plant Ecology and Evolution. 147(3): 463-466. Morphology

Similar Species

Similar species not published on this website:

Navicula lacuum Lange-Bertalot, Hofmann, Werum & Van de Vijver; 2009; 420

Navicula pierre-comperei Lange-Bertalot & G. Hofmann; 2014; 464

This page should be cited as:

Cox E. J. Navicula claytonii Carter; 1987; 633. 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 [Accessed:  ].

Image Gallery

Record last modified: 27/12/2020