Diatoma ehrenbergii Kützing; 1844; 48
Synonymy
Diatoma grande W. Smith
Diatoma vulgaris var. ehrenbergii (Kützing) Grunow 1862
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 30-125 µm, width 6-9 µm.
Shape
Valves linear with subcapitate ends, smaller specimens tend towards lanceolate.
Symmetry
Isopolar, bilaterally symmetrical, sometimes slightly asymmetrical.
Striae
Numerous transapical ribs, primary and secondary, 7-10 in 10 µm (Williams 1985). Fine striae not visible in LM.
Axial area
Thin sternum difficult to discern in LM.
Other features
Cingulum composed of several open bands.
Colonies are formed by attaching at the poles, a zig-zag structure.
SEM morphology
One rimoportula can be located in different positions across the valve face, but is often close to the valve pole; located between virgae, replacing 4-5 areolae. Two apical pore fields extending from the edge of the valve face onto the mantle. Several small spines on the valve face/mantle junction. Internally primary ribs heavily silicified and extending across entire valve width, secondary ribs raise above internal valve surface towards and at mantle.
Length 30-125 µm, width 6-9 µm.
Shape
Valves linear with subcapitate ends, smaller specimens tend towards lanceolate.
Symmetry
Isopolar, bilaterally symmetrical, sometimes slightly asymmetrical.
Striae
Numerous transapical ribs, primary and secondary, 7-10 in 10 µm (Williams 1985). Fine striae not visible in LM.
Axial area
Thin sternum difficult to discern in LM.
Other features
Cingulum composed of several open bands.
Colonies are formed by attaching at the poles, a zig-zag structure.
SEM morphology
One rimoportula can be located in different positions across the valve face, but is often close to the valve pole; located between virgae, replacing 4-5 areolae. Two apical pore fields extending from the edge of the valve face onto the mantle. Several small spines on the valve face/mantle junction. Internally primary ribs heavily silicified and extending across entire valve width, secondary ribs raise above internal valve surface towards and at mantle.
Literature
References are given in chronological order.
Reference |
Citation |
|---|---|
| Kützing F.T. 1844. Die Kieselschaligen Bacillarien oder Diatomeen. Fr. Fritsch, Nordhausen. 152 pp; 30 pls | Morphology; Illustrations; Description |
| Smith W. 1855. Notes of an excursion to the south of France and the Auvergne in Search of Diatomaceae. Annals and Magazine of Natural History, 2nd series. 15: 1-9; pl.1. | Morphology; Illustrations |
| Grunow A. 1862. Die österreichischen Diatomaceen nebst Anschluss einiger neuen Arten von andern Lokalitäten und einer kritischen Uebersicht der bisher bekannten Gattungen und Arten. Erste Folge. Epithemieae, Meridioneae, Diatomeae, Entopyleae, Surirelleae, Amphipleureae. Zweite Folge. Familie Nitzschieae. 12. Verhandlungen der Kaiserlich-Königlichen Zoologisch-Botanischen Gesellschaft in Wien. 315-472, 545-588 pp; 7 pls. | Morphology; Taxonomy |
| 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; Type Illustration; |
| 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; Taxonomy; Illustrations |
| Lange-Bertalot H. 1993. 85 Neue Taxa und über 100 weitere neu definierte Taxa ergänzend zur Süßwasserflora von Mitteleuropa Vol. 2/1-4. Bibliotheca Diatomologica 27, J. Cramer, Berlin, Stuttgart. 454 pp | 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., King L., Kelly M. Diatoma ehrenbergii Kützing; 1844; 48. 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=3383. [Accessed:
].
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Record last modified: 11/01/2022