Fragilaria saxoplanctonica Lange-Bertalot & S.Ulrich; 2014; 30

Key references

Lange-Bertalot H., Ulrich S. 2014. Contributions to the taxonomy of needle-shaped Fragilaria und Ulnaria species. Lauterbornia. 78: 1-73.

Morphology

Size
Length 40-170 µm, width 1.5-2.5 µm (Lange-Bertalot & Ulrich 2014).

Shape
Valves linear, gradually tapering from the valve centre with rounded ends.

Symmetry
Isopolar, bilaterally symmetrical.

Striae
Striae parallel, opposite or alternating, 23-28 in 10 µm (Lange-Bertalot & Ulrich 2014).

Axial area
Narrow, linear.

Central area
Appears indistinct in LM, but is elongate and wide in SEM, but not extending to the valve margin.

SEM morphology
Uniseriate striae with few, round, occluded areolae.

Two small apical pore fields.

One rimoportula near a pore field.

Literature

References are given in chronological order.

Reference	Citation
Lange-Bertalot H., Ulrich S. 2014. Contributions to the taxonomy of needle-shaped Fragilaria und Ulnaria species. Lauterbornia. 78: 1-73.	Description; Type Illustration; Morphology; Taxonomy;

Similar species not published on this website:

This page should be cited as:

Jüttner I., Ector L. Fragilaria saxoplanctonica Lange-Bertalot & S.Ulrich; 2014; 30. 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=4549. [Accessed: ].

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