Taxon Account

Fallacia Stickle & Mann in Round, Crawford & Mann; 1990; 554

Key references

Round F.E., Crawford R.M., Mann D.G. 1990. The Diatoms. Biology & Morphology of the Genera. Cambridge University Press, Cambridge. 747 pp

Morphology

Cells isopolar, bilaterally symmetrical, valves linear-lanceolate or elliptical.

The striae are completely covered externally by a conopeum, which is perforated by a multitude of tiny pores. The conopeum is supported along the centre of the valve by the narrow longitudinal ribs adjacent to the raphe, appearing in LM as a hyaline ‘lyre’.

Window-like openings are present on the valve surface on both sides of the distal raphe fissures at the poles where the conopeum has not merged with a fold at the valve face/mantle junction.

Plastids are H-shaped with two plates lying against the girdle.

Literature

References are given in chronological order.

Reference
Citation
Round F.E., Crawford R.M., Mann D.G. 1990. The Diatoms. Biology & Morphology of the Genera. Cambridge University Press, Cambridge. 747 pp Morphology; Taxonomy; Description;
Levkov Z., Krstic S., Metzeltin D., Navkov T. 2007. Diatoms of Lakes Prespa and Ohrid. About 500 taxa from ancient lake system. 16. Iconographia Diatomologica. 613 pp Morphology; Illustrations
Van de Vijver B., Cox E.J. 2015. Fallacia emmae sp. nov., (Bacillariophyta) a new soil-inhabiting diatom species from the sub-Antarctic Region. Cryptogamie, Algologie. 36(3): 245-254. Morphology; Illustrations
This page should be cited as:

Mann D. G., Jüttner I. Fallacia Stickle & Mann in Round, Crawford & Mann; 1990; 554. 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=3858. [Accessed:  ].

Image Gallery

Record last modified: 14/01/2022