Navicula tripunctata (O.F. Müller) Bory; 1822; 128
Key references
Cox E.J. 1979. Symmetry and valve structure in naviculoid diatoms. Nova Hedwigia Beiheft. 64: 193-206.
Morphology
Size
30-70 µm long, 6-10 µm wide (UK populations).
Shape
Valves linear to linear-lanceolate with somewhat cuneate, rounded apices.
Symmetry
Isopolar, bilaterally symmetrical.
Striae
Slightly radiate, becoming parallel towards the apices and convergent at the apices, 9-12 in 10 µm; two or three shortened striae opposite the central area, sometimes slightly wider spaced.
Axial area
Narrow linear.
Central area
Square to rectangular, extending half or more than half the valve width.
Raphe
Straight, with only very slightly expanded central endings, terminating at the edges of the central area; terminal endings hooked at the apices.
30-70 µm long, 6-10 µm wide (UK populations).
Shape
Valves linear to linear-lanceolate with somewhat cuneate, rounded apices.
Symmetry
Isopolar, bilaterally symmetrical.
Striae
Slightly radiate, becoming parallel towards the apices and convergent at the apices, 9-12 in 10 µm; two or three shortened striae opposite the central area, sometimes slightly wider spaced.
Axial area
Narrow linear.
Central area
Square to rectangular, extending half or more than half the valve width.
Raphe
Straight, with only very slightly expanded central endings, terminating at the edges of the central area; terminal endings hooked at the apices.
Literature
References are given in chronological order.
Reference |
Citation |
|---|---|
| Bory de Saint-Vincent J.B.M. and coll. 1822. Dictionnaire Classique d'Histoire Naturelle Paris. Rey & Gravier, libraires-éditeurs; Baudouin Frères, libraires-éditeurs., Vol.2. | Morphology; Description |
| Cox E.J. 1979. Symmetry and valve structure in naviculoid diatoms. Nova Hedwigia Beiheft. 64: 193-206. | Morphology; Illustrations; |
| Hofmann G., Werum M., Lange-Bertalot H. 2011. Diatomeen im Süßwasser-Benthos von Mitteleuropa. A.R.G. Gantner, Ruggell. 908 pp | Ecology; Morphology; Illustrations |
This page should be cited as:
Cox E. J., Jones V. Navicula tripunctata (O.F. Müller) Bory; 1822; 128. 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=3364. [Accessed:
].
Image Gallery
Record last modified: 27/12/2020