Nitzschia linearis W. Smith; 1853; 39
Key references
Lange-Bertalot H., Hofmann G., Werum M., Cantonati M. 2017. Freshwater Benthic Diatoms of Central Europe: Over 800 Common Species Used in Ecological Assessment. Cantonati M., Kelly M.G., Lange-Bertalot H. (eds.), Koeltz Botanical Books, Schmitten-Oberreifenberg, Germany. 942 pp
Morphology
Size
Length 75.6-207.5 µm, maximum width 6.25-7.5 µm (UK population); (Lange-Bertalot et al. 2017 has length 50-130 µm, width 5-7.5 µm ).
Shape
Valves linear or linear-lanceolate, slightly constricted at the centre on the raphe side. Poles rostrate or subcapitate, asymmetrical, curved towards the side opposite the raphe, raphe side convex, opposite side slightly concave.
Symmetry
Isopolar.
Striae
Parallel, clearly visible, ca. 30 in 10 µm in the valve centre, ca. 35 in 10 µm towards the poles (Lange-Bertalot et al. 2017 has 27-30 in 10 µm).
Other features
Large fibulae, wider spaced in the valve centre, 11-13 in 10 µm (Lange-Bertalot et al. 2017 has 9-14 in 10 µm).
SEM morphology
A small ridge present on the valve margin opposite the raphe.
Mantle valve surface and girdle bands with raised ornamentation varying from meandering linear or oblong ridges to isolated nodules.
Edge of girdle bands with regular row of raised nodules.
Length 75.6-207.5 µm, maximum width 6.25-7.5 µm (UK population); (Lange-Bertalot et al. 2017 has length 50-130 µm, width 5-7.5 µm ).
Shape
Valves linear or linear-lanceolate, slightly constricted at the centre on the raphe side. Poles rostrate or subcapitate, asymmetrical, curved towards the side opposite the raphe, raphe side convex, opposite side slightly concave.
Symmetry
Isopolar.
Striae
Parallel, clearly visible, ca. 30 in 10 µm in the valve centre, ca. 35 in 10 µm towards the poles (Lange-Bertalot et al. 2017 has 27-30 in 10 µm).
Other features
Large fibulae, wider spaced in the valve centre, 11-13 in 10 µm (Lange-Bertalot et al. 2017 has 9-14 in 10 µm).
SEM morphology
A small ridge present on the valve margin opposite the raphe.
Mantle valve surface and girdle bands with raised ornamentation varying from meandering linear or oblong ridges to isolated nodules.
Edge of girdle bands with regular row of raised nodules.
Literature
References are given in chronological order.
Reference |
Citation |
|---|---|
| Smith W. 1853. Synopsis of British Diatomaceae. John Van Voorst, London, Vol.1. 89 pp; 1-31 pl. | Morphology; Taxonomy; Description; Illustrations |
| Krammer K., Lange-Bertalot H. 1988. Süßwasserflora Mitteleuropas. Bacillariophyceae. 2. Teil. Bacillariophyceae, Epithemiaceae, Surirellaceae. Eds. Ettl H., Gerloff J., Heynig H., Mollenhauer D., Gustav Fischer Verlag, Stuttgart. 596 pp | Morphology; Illustrations; Taxonomy |
| Lange-Bertalot H., Hofmann G., Werum M., Cantonati M. 2017. Freshwater Benthic Diatoms of Central Europe: Over 800 Common Species Used in Ecological Assessment. Cantonati M., Kelly M.G., Lange-Bertalot H. (eds.), Koeltz Botanical Books, Schmitten-Oberreifenberg, Germany. 942 pp | Morphology; Ecology; Illustrations; |
This page should be cited as:
Jüttner I., Williams D. M. Nitzschia linearis W. Smith; 1853; 39. 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=3369. [Accessed:
].
Image Gallery
Record last modified: 27/12/2020