Taxon Account

Psammothidium lacus-vulcani (Lange-Bertalot & Krammer) Bukhtiyarova in Bukhtiyarova & Round; 1996

Synonymy

Cocconeis thienemannii Hustedt 1954
Achnanthes lacus-vulcani Lange-Bertalot & Krammer 1989

Key references

Hustedt F. 1954. Die Diatomeenflora der Eifelmaare. Archiv für Hydrobiologie. 48(4): 451-496.

Morphology

Size
8.0-9.5 µm long, 6.0-7.5 µm wide (UK population).

Shape
Valves elliptic with broadly rounded poles.

Symmetry
Isopolar, bilaterally symmetrical, heterovalvar.

Striae
On both valves, striae slightly radiate in valve centre, becoming more radiate towards the poles, 24-26 in 10 µm on raphe valve, 22-26 in 10 µm on rapheless valve (UK population).

Axial area
Narrow linear axial area on raphe valve, narrow linear to narrow lanceolate, irregular, on rapheless valve.

Central area
On raphe valve indistinct or small rounded, irregular, bordered by slightly shortened striae on both sides; on rapheless valve absent or slightly widened, irregular, bordered by slightly shortened striae on one or both sides, or indistinct from lanceolate axial area.

Raphe
Straight, slightly expanded proximal ends.

Literature

References are given in chronological order.

Reference
Citation
Hustedt F. 1954. Die Diatomeenflora der Eifelmaare. Archiv für Hydrobiologie. 48(4): 451-496. Morphology; Type Illustration; Description; Taxonomy
Simonsen R. 1987. Atlas and Catalogue of the Diatom Types of Friedrich Hustedt. J. Cramer in der Gebrüder Borntraeger Verlagsbuchhandlung, Berlin, Stuttgart. Morphology; Type Illustration
Lange-Bertalot H., Krammer K. 1989. Achnanthes eine Monographie der Gattung mit Definition der Gattung Cocconeis und Nachträgen zu den Naviculaceae. Bibliotheca Diatomologica Vol. 18. 393 pp; 100 pls 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; Type Illustration
Bukhtiyarova L., Round F.E. 1996. Revision of the genus Achnanthes sensu lato. Psammothidium, a new genus based on A. marginulatum. Diatom Research. 11(1): 1-30. Taxonomy; Morphology
Cameron N.G., Birks H.J.B., Jones V.J., Berge F., Catalan J., Flower R.J., Garcia J., Kawecka B., Koinig K.A., Marchetto A., Sánchez-Castillo P., Schmidt R., Siško M., Solovieva N., Štefková E., Toro M. 1999. Surface-sediment and epilithic diatom pH calibration sets for remote European mountain lakes (AL:PE Project) and their comparison with the Surface Waters Acidification Programme (SWAP) calibration set. Journal of Paleolimnology. 22: 291-317. Morphology
This page should be cited as:

Jüttner I., Ector L. Psammothidium lacus-vulcani (Lange-Bertalot & Krammer) Bukhtiyarova in Bukhtiyarova & Round; 1996. In: Jüttner I., Bennion H., Carter C., Cox E.J., Ector L., Flower R., Jones V., Kelly M.G., Mann D.G., Sayer C., Turner J. A., 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=3989. [Accessed:  ].

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Record last modified: 15/08/2021