Staurosira exigua (W.Smith) Van de Vijver & Guiry; 2022; 2
Synonymy
Triceratium exiguum W.Smith 1856
Staurosira construens var. exigua (W.Smith) Krammer & Lange-Bertalot 2000
Key references
Van de Vijver B., Guiry M.D. 2022. Typification and observations on Triceratium exiguum W.Smith and its elevation to species level in the genus Staurosira (Staurosiraceae, Bacillariophyta). Notulae Algarum. 240: 1-4.
Morphology
Size
4.0-7.0 µm long from apex to valve centre (type population, Van de Vijver & Guiry 2022).
Shape
Valves triangular with straight, slightly concave or convex margins, and rostrate or subcapitate apices; shape sometimes irregular.
Symmetry
Triradiate.
Striae
Striae more or less parallel, 14-16 in 10 µm (type population Van de Vijver & Guiry 2022).
Central area
Central area triangular extending as narrow linear sterna towards apices.
4.0-7.0 µm long from apex to valve centre (type population, Van de Vijver & Guiry 2022).
Shape
Valves triangular with straight, slightly concave or convex margins, and rostrate or subcapitate apices; shape sometimes irregular.
Symmetry
Triradiate.
Striae
Striae more or less parallel, 14-16 in 10 µm (type population Van de Vijver & Guiry 2022).
Central area
Central area triangular extending as narrow linear sterna towards apices.
Literature
References are given in chronological order.
Reference |
Citation |
|---|---|
| Brightwell T. 1853. On the genus Triceratium, with descriptions and figures of the species. Quarterly Journal of Microscopical Science. 1: 245–252. | Morphology; Illustrations |
| Smith W. 1856. A Synopsis of the British Diatomaceae. John van Voorst, London. 107 pp; pls 32-62, pls A-E | Morphology; Description |
| Krammer K., Lange-Bertalot H. 1991. Süßwasserflora Mitteleuropas. Bacillariophyceae. 3. Teil. Centrales, Fragilariaceae, Eunotiaceae. Eds Ettl H., Gerloff J., Heynig H., Mollenhauer D., Gustav Fischer Verlag, Stuttgart. 576 pp | Morphology; Illustrations; Taxonomy |
| Van de Vijver B., Guiry M.D. 2022. Typification and observations on Triceratium exiguum W.Smith and its elevation to species level in the genus Staurosira (Staurosiraceae, Bacillariophyta). Notulae Algarum. 240: 1-4. | Morphology; Taxonomy; Type Illustration; |
This page should be cited as:
Van de Vijver B., Jüttner I. Staurosira exigua (W.Smith) Van de Vijver & Guiry; 2022; 2. 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=4737. [Accessed:
].
Image Gallery
Record last modified: 24/08/2024