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Tabellaria (Bacillariophyceae)

Tabellaria sp. from NH USA
Note: the gelatinous ‘glue pads’ in each connecting corner holding the cells together

Tabellaria sp. from NH USA
Note: the parallel septa lines that start from each end of the cell and stop before reaching each other in the middle. The septa are formed from intercalary bands that increase cell width and cell volume while maintaining wall strength.

Tabellaria sp. from NH USA
Irregular pattern of glued cell ends

Tabellaria sp. from NH USA
Glue pads at cell ends are evident.

Tabellaria sp. from NH USA
Cell length to width ratio is large -- elongate cells. Glue pads are evident.

Tabellaria sp. from NH USA
Typical zig-zag pattern of colony. Here the cells are almost square, with a low length/width ratio.

Tabellaria sp., end view of cells with 'glue pad' evident, between cells in colony
Photograph by Francois Morrison, University of New Hampshire, Durham NH USA

Tabellaria sp. cruciform colony with focus on empty frustule septa (upper right of colony), from Goose Pond, Shapleigh ME USA

Tabellaria sp. SEM illustrating internal girdle bands with septa, separated from frustule
Photobraph from 'Diatoms of the United States posted online

Tabellaria flocculosa (Roth) Kuetz.
Modified from sketch by Carlson (1913) from the collection of Manfred Bölter, University of Kiel, DE

Carlson G.W.F. 1913. Süsswasseralgen aus der Antarktis, Südgeorgien und den Falkland Inseln. From: „Wissenschaftliche Ergebnisse der schwedischen Südpolar-Expedition 1901-1903 unter Leitung von Dr. Otto Nordenskjöld.“ Band IV, Lithographisches Institut des Generalstabs, Stockholm.

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