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.
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., Carter C., Cox E.J., Ector L., Jones V., Kelly M.G., Kennedy B., Mann D.G., Turner J. A., Van de Vijver B., Wetzel C.E., 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