Taxon Account

Ctenophora pulchella (Ralfs ex. Kütz.) D.M. Williams & Round; 1986; 330

Synonymy

Fragilaria pulchella (Ralfs) Lange-Bertalot

Key references

Williams, D. M. and F. E. Round. 1986. Revision of the genus Synedra Ehrenb. Diatom Research. 1(2): 313-339.

Morphology

Shape
Linear-laneolate with rounded, subrostrate or subcapitate ends, in girdle view almost rectangular.

Symmetry
Isopolar, bilaterally symmetrical.

Striae
More or less parallel throughout, punctate.

Axial area
Narrow, slightly irregular, widening towards the valve centre.

Central area
Large quadrangular fascia which might have ghost striae; internally a rounded depression is present.


SEM morphology
External areola openings occluded by cribra.

One rimoportula at each valve end positioned diagonal or perpendicular to the sternum.

'Sunken' apical pore fields at each valve end.

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
Williams, D. M. and F. E. Round. 1986. Revision of the genus Synedra Ehrenb. Diatom Research. 1(2): 313-339. Morphology; Taxonomy; Description; Illustrations; Type Illustration
Kobayasi H., Idei M., Mayama S., Nagumo T., Osada K. 2006. H. Kobayasi's Atlas of Japanese Diatoms based on electron microscopy. Volume 1. Uchida Rokakuko Publishing Co., Tokyo. 59 + 533 pp., 180 pls. Illustrations; Morphology
Tuji A., Williams D.M. 2008. Typification and type examination of Synedra familiaris Kütz. and related taxa. Diatom. 24: 25-29. Type Illustration; Morphology
This page should be cited as:

Jüttner I. Ctenophora pulchella (Ralfs ex. Kütz.) D.M. Williams & Round; 1986; 330. In: Jüttner I., Carter C., Chudaev D., 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=3552. [Accessed:  ].

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Record last modified: 27/12/2020