Taxon Account

Diatoma tenuis C. Agardh; 1812; 15

Synonymy

Diatoma elongatum var. tenuis (tenue) (Agardh) Van Heurck 1885

Key references

Williams D.M. 1985. Morphology, Taxonomy and Inter-Relationships of the Ribbed Araphid Diatoms from the Genera Diatoma and Meridion (Diatomaceae: Bacillariophyta). Bibliotheca Diatomologica Vol. 8, J. Cramer, Vaduz. 228 pp.; 27 pls.

Morphology

Size
Length 20-120 µm, width 2-5 µm.

Shape
Valves linear with subcapitate or spatulate ends.

Symmetry
Isopolar, bilaterally symmetrical.

Valve
Prominent transapical ribs (primary, secondary and tertiary), 6-10 in 10 µm.

Striae
Very fine, not visible in LM.

Axial area
Narrow, linear.

Other features
The cingulum consists of few bands, open at opposite ends of the frustule.


SEM morphology
Uniseriate, parallel striae.

Large apical pore fields.

Internally prominent transapical ribs.

One rimoportula positioned close to one of the apical pore fields.

Literature

References are given in chronological order.

Reference
Citation
Agardh C.A. 1812. Algarum decas prima. Litteris Berlingianis, Lundæ. 15 pp Morphology; Description
Agardh, C.A. 1824. Systema Algarum. Adumbravit C.A. Agardh. Lundae Literis Berlingianis. Lundae. xxxvii, 312 pp.. Taxonomy
Hartman A.A. 1967. Le Genre Diatoma aux Pays-Bas. Phycologia. 6(4): 240-246. Morphology; Illustrations
Williams D.M. 1985. Morphology, Taxonomy and Inter-Relationships of the Ribbed Araphid Diatoms from the Genera Diatoma and Meridion (Diatomaceae: Bacillariophyta). Bibliotheca Diatomologica Vol. 8, J. Cramer, Vaduz. 228 pp.; 27 pls. Morphology; Taxonomy; Illustrations;
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
Snoeijs P., Potapova M. 1998. Ecotypes or endemic species? - a hypothesis on the evolution of Diatoma taxa (Bacillariophyta) in the northern Baltic Sea. Nova Hedwigia. 67: 303-348. Morphology; Type Illustration; Ecology; Taxonomy
Morales E.A., Bahls L.L., Cody W.R. 2005. Morphological studies of Distrionella incognita (Reichardt) Williams (Bacillariophyceae) from North America with comments on the taxonomy of Distrionella Williams. Diatom Research. 20(1): 115-135. Morphology; Illustrations

Similar Species

Similar species not published on this website:

This page should be cited as:

Williams D. M., Jüttner I. Diatoma tenuis C. Agardh; 1812; 15. In: Jüttner I., Carter C., Chudaev D., 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=4097. [Accessed:  ].
Record last modified: 27/12/2020