Staurosirella crux (Ehrenb.) Van de Vijver & Kusber; 2024
Synonymy
Staurosirella harrisonii (W. Sm.) E.Morales & C.E. Wetzel
Biblarium crux (Ehrenb.) Ehrenb.
Odontidium harrisonii W.Sm.
Fragilaria harrisonii (W.Sm.) Grunow
Staurosirella lata Levkov et al.
Navicula crux Ehrenb.
Key references
Morales E.A., Wetzel C.E., Van de Vijver B., Ector L. 2015. Morphological studies on type material of widely cited araphid diatoms (Bacillariophyta). Phycologia. 54(5): 455-470.
Van de Vijver B., Kusber W.-H., Jüttner I., Schuster T.M., Williams D.M. 2024. Revision of the Staurosirella leptostauron complex (Staurosiraceae, Bacillariophyta) in Europe with the description of three new species. Plant Ecology and Evolution. 157(2): 174-201.
Morphology
Size
10-36 µm long, 7-24 µm wide (Van de Vijver et al. 2024).
Shape
Valves cruciform in larger valves, becoming subovoid or rhomboid in smaller valves; apices broadly rounded.
Symmetry
Larger valves can be slightly heteropolar with one apex slightly wider than the opposite one, smaller valves heteropolar, asymmetrical to the transapical axis.
Striae
Striae slightly radiate or radiate, some slightly curved, alternating, 5-6 in 10 µm (Van de Vijver et al. 2024). Lineolae discernible.
Axial area
Sternum linear to weakly lanceolate.
10-36 µm long, 7-24 µm wide (Van de Vijver et al. 2024).
Shape
Valves cruciform in larger valves, becoming subovoid or rhomboid in smaller valves; apices broadly rounded.
Symmetry
Larger valves can be slightly heteropolar with one apex slightly wider than the opposite one, smaller valves heteropolar, asymmetrical to the transapical axis.
Striae
Striae slightly radiate or radiate, some slightly curved, alternating, 5-6 in 10 µm (Van de Vijver et al. 2024). Lineolae discernible.
Axial area
Sternum linear to weakly lanceolate.
Literature
References are given in chronological order.
Reference |
Citation |
|---|---|
| Ehrenberg C.G. 1838. Die Infusionsthierchen als vollkommene Organismen. Ein Blick in das tiefere organische Leben de Natur. Verlag von Leopold Voss, Leipzig. 1-xvii, 1-548 pp; 1-64 pls | Description; Morphology; Taxonomy |
| Smith W. 1856. A Synopsis of the British Diatomaceae. John van Voorst, London. 107 pp; pls 32-62, pls A-E | Illustrations; Morphology; Taxonomy |
| Levkov Z., Wiliiams D.M. 2011. Fifteen new diatom (Bacillariophyta) species from Lake Ohrid, Macedonia. Phytotaxa. 30: 1-41. | Morphology; Illustrations; Taxonomy |
| Morales E.A., Wetzel C.E., Van de Vijver B., Ector L. 2015. Morphological studies on type material of widely cited araphid diatoms (Bacillariophyta). Phycologia. 54(5): 455-470. | Morphology; Taxonomy; Type Illustration |
| Van de Vijver B., Kusber W.-H., Jüttner I., Schuster T.M., Williams D.M. 2024. Revision of the Staurosirella leptostauron complex (Staurosiraceae, Bacillariophyta) in Europe with the description of three new species. Plant Ecology and Evolution. 157(2): 174-201. | Morphology; Taxonomy; Type Illustration |
This page should be cited as:
Jüttner I., Van de Vijver B., Williams D.M. Staurosirella crux (Ehrenb.) Van de Vijver & Kusber; 2024. 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=4503. [Accessed:
].
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Record last modified: 16/12/2024