Pinnularia subcapitata Gregory; 1856; 9
Key references
Krammer K. 2000. The genus Pinnularia. Lange-Bertalot H. (ed), Diatoms of Europe, Diatoms of the European Inland waters and comparable habitats, Vol.1, A.R.G. Gantner Verlag K.G., Ruggell. 703 pp
Morphology
Shape
Valves linear with almost straight or very slightly convex margin and subcapitate ends, rostrate ends in smaller valves.
Symmetry
Isopolar, bilaterally symmetrical.
Striae
Parallel, rarely slightly radiate in central part of valve, convergent towards the ends, striae alveolate and multiseriate (SEM).
Axial area
Narrow, linear, slightly widening towards the central area.
Central area
Broad fascia, rectangular or rhombic, sometimes asymmetrical, in smaller valves oval; marginal striae either absent, very short or slightly shortened particularly in smaller valves.
Raphe
Slightly curved with expanded proximal endings deflected to one side; terminal fissures curved and terminating on the mantle.
Valves linear with almost straight or very slightly convex margin and subcapitate ends, rostrate ends in smaller valves.
Symmetry
Isopolar, bilaterally symmetrical.
Striae
Parallel, rarely slightly radiate in central part of valve, convergent towards the ends, striae alveolate and multiseriate (SEM).
Axial area
Narrow, linear, slightly widening towards the central area.
Central area
Broad fascia, rectangular or rhombic, sometimes asymmetrical, in smaller valves oval; marginal striae either absent, very short or slightly shortened particularly in smaller valves.
Raphe
Slightly curved with expanded proximal endings deflected to one side; terminal fissures curved and terminating on the mantle.
Literature
References are given in chronological order.
Reference |
Citation |
|---|---|
| Gregory W. 1856. Notice of some new species of British fresh-water Diatomaceae. Quarterly Journal of Microscopical Science. 4: 1-14. | Morphology; Description; Illustrations |
| Krammer K. 2000. The genus Pinnularia. Lange-Bertalot H. (ed), Diatoms of Europe, Diatoms of the European Inland waters and comparable habitats, Vol.1, A.R.G. Gantner Verlag K.G., Ruggell. 703 pp | Morphology; Type Illustration; |
This page should be cited as:
Jüttner I. Pinnularia subcapitata Gregory; 1856; 9. 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=3534. [Accessed:
].
Image Gallery
Record last modified: 27/12/2020