Taxon Account

Navicula capitatoradiata Germain; 1981; 188-189

Key references

Cox E.J. 1995. Studies on the diatom genus Navicula Bory. VII. The identity and typification of Navicula gregaria Donkin, N. cryptocephala and related taxa. Diatom Research. 10(1): 91-111.

Morphology

Shape
Valves lanceolate with rostrate or slightly subcapitate apices.

Symmetry
Isopolar, bilaterally symmetrical.

Striae
Radiate at the valve centre, becoming parallel and then convergent towards the valve ends.

Axial area
Narrow, linear.

Central area
Small, rounded, more often irregular due to longer and shorter striae bordering the central area.

Raphe
Straight, with slightly expanded, proximal ends which terminate just within the central area.


SEM morphology
Proximal raphe ends small hooks, terminal fissures deflected at the apices in the same direction.

Literature

References are given in chronological order.

Reference
Citation
Germain H. 1981. Flore des diatomées Diatomophycées eaux douces et saumâtres du Massif Armoricain et des contrées voisines d’Europe occidentale. Collection "Faunes et Flores Actuelles". Société Nouvelle des Editions Boubée, Paris. 444 pp Morphology; Illustrations; Taxonomy; Description
Cox E.J. 1995. Studies on the diatom genus Navicula Bory. VII. The identity and typification of Navicula gregaria Donkin, N. cryptocephala and related taxa. Diatom Research. 10(1): 91-111. Morphology; Type Illustration; Taxonomy
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; Ecology; Illustrations
This page should be cited as:

Jüttner I. Navicula capitatoradiata Germain; 1981; 188-189. 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=2847. [Accessed:  ].

Image Gallery

Record last modified: 27/12/2020