Taxon Account

Bacillaria paxillifera (O.F.Müller) T.Marson; 1901; 254

Key references

Schmid A.-M. M. 2007. The "paradox" diatom Bacillaria paxillifer (Bacillariophyta) revisited. Journal of Phycology. 43: 139-155.

Jahn R., Schmid A.M.M. 2007. Revision of the brackish-freshwater diatom genus Bacillaria Gmelin (Bacillariophyta) with the description of a new variety and two new species. European Journal of Phycology. 42(3): 295-312.

Morphology

Size
Length 78.0-95.0, width 5.0-6.0 µm (UK population); 65-170 µm, 6-7 µm (Jahn & Schmid 2007).

Shape
Linear, tapering near the valve ends to rostrate apices.

Symmetry
Isopolar and ± bilaterally symmetrical.

Striae
Parallel, 22-24 in 10 µm (UK population), 20-22 in 10 µm (Jahn & Schmid 2007).

Raphe
The raphe is located approximately in the valve centre, fibulae are spaced irregularly, 6-8 in 10 µm (UK population), 6-9 in 10 µm (Jahn & Schmid 2007).

Other features
Motile colonies.


SEM morphology
The raphe is continuous from pole to pole and ends in a t-shaped groove at the apices, internally in a deflected helictoglossa. Striae uniseriate, areolae are occluded by hymenes. A ridge is on one side of the raphe. Small spines can be visible on the valve margin.

Literature

References are given in chronological order.

Reference
Citation
Müller O.F. 1786. Animalcula Infusoria Fluviatilia et Marina, quae detexit, systematice descripsit et ad vivum delineari duravit Otho Fridericus Müller. N. Möller, Hauniae. Taxonomy; Biology; Illustrations
Marsson T. 1901. Diatomaceen von Neu-Vorpommern, Rügen und Usedom. Angewandte Mikroskopie und Klinische Chemie. 6: 253-268. Taxonomy
Schmid A.-M. M. 2007. The "paradox" diatom Bacillaria paxillifer (Bacillariophyta) revisited. Journal of Phycology. 43: 139-155. Morphology; Illustrations; Type Illustration; Biology
Jahn R., Schmid A.M.M. 2007. Revision of the brackish-freshwater diatom genus Bacillaria Gmelin (Bacillariophyta) with the description of a new variety and two new species. European Journal of Phycology. 42(3): 295-312. Morphology; Taxonomy; Type Illustration; Ecology
This page should be cited as:

Mann D. G., Kelly M., Jüttner I. Bacillaria paxillifera (O.F.Müller) T.Marson; 1901; 254. 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=4557. [Accessed:  ].

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Record last modified: 27/12/2020