Fragilaria deformis (W.Sm.) Van de Vijver & Ector; 2020; 139
Synonymy
Synedra deformis W.Sm. 1856
Key references
Van de Vijver B., Mertens A., Ector L. 2020. Analysis of the type material of Synedra deformis W.Sm. and Synedra vaucheriae var. deformis Grunow (Fragilariaceae, Bacillariophyta). Cryptogamie, Algologie. 41(13): 137-149.
Morphology
Size
14-29 µm long, 4.5-5.0 µm wide (Van de Vijver et al. 2020).
Shape
Valves linear to linear-elliptic, often slightly asymmetrical, apices protracted, rostrate to subcapitate.
Striae
Striae parallel in central part of valve becoming slightly radiate towards apices, 14-16 in 10 µm (Van de Vijver et al. 2020).
Axial area
Axial area narrow linear, sometimes slightly widening towards central area.
Central area
Central area irregular, asymmetrical due to short or missing striae on one side.
14-29 µm long, 4.5-5.0 µm wide (Van de Vijver et al. 2020).
Shape
Valves linear to linear-elliptic, often slightly asymmetrical, apices protracted, rostrate to subcapitate.
Striae
Striae parallel in central part of valve becoming slightly radiate towards apices, 14-16 in 10 µm (Van de Vijver et al. 2020).
Axial area
Axial area narrow linear, sometimes slightly widening towards central area.
Central area
Central area irregular, asymmetrical due to short or missing striae on one side.
Literature
References are given in chronological order.
Reference |
Citation |
|---|---|
| Smith W. 1856. A Synopsis of the British Diatomaceae. John van Voorst, London. 107 pp; pls 32-62, pls A-E | Morphology; Taxonomy; Description |
| Van de Vijver B., Mertens A., Ector L. 2020. Analysis of the type material of Synedra deformis W.Sm. and Synedra vaucheriae var. deformis Grunow (Fragilariaceae, Bacillariophyta). Cryptogamie, Algologie. 41(13): 137-149. | Type Illustration; Morphology; Taxonomy; |
| Van de Vijver B., Hürlimann J., Williams D.M., Levkov Z., Wetzel C.E., Ector L. 2021. Fragilaria subcapitellata (Fragillariaceae, Bacillariophyta), a new diatom species from Switzerland. Diatom Research. 36(2): 119-131. | Morphology; Taxonomy; Illustrations |
This page should be cited as:
Jüttner I., Hull K., Van de Vijver B. Fragilaria deformis (W.Sm.) Van de Vijver & Ector; 2020; 139. 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=4733. [Accessed:
].
Image Gallery
Record last modified: 26/01/2024