Taxon Account

Cavinula cocconeiformis (W.Gregory ex Greville) D.G.Mann & Stickle in Round et al.; 1990; 665

Synonymy

Navicula cocconeiformis W.Gregory ex Greville

Key references

Cvetkoska A., Levkov Z., Hamilton P.B., Potapova M. 2014. The biogeographic distribution of Cavinula (Bacillariophyceae) in North America with the descriptions of two new species. Phytotaxa. 184(4): 181-207.

Morphology

Size
12-25 (36) µm long, 7-11 (15) µm wide (Cvetkoska et al. 2014).


Shape
Valves lanceolate to elliptic-lanceolate with rounded ends.

Symmetry
Isopolar, bilaterally symmetrical.

Striae
Striae radiate 25-30 in 10 µm; in valve centre longer and shorter striae alternate; areolae can be discernible.

Axial area
Narrow, linear.

Central area
Indistinct to small oval.

Raphe
Raphe filiform with expanded, straight central pores and terminal raphe endings deflected in opposite directions.

Literature

References are given in chronological order.

Reference
Citation
Greville R.K. 1855. Report on a collection of Diatomaceae made in the district of Braemar by Professor Balfour and Mr. Gerge Lawson. Annals and Magazine of Natural History, 2nd series. 15: 252-261; pl. IX. Illustrations
Gregory W. 1856. Notice of some new species of British fresh-water Diatomaceae. Quarterly Journal of Microscopical Science. 4: 1-14. Morphology; Type Illustration; Description; Taxonomy
Round F.E., Crawford R.M., Mann D.G. 1990. The Diatoms. Biology & Morphology of the Genera. Cambridge University Press, Cambridge. 747 pp Taxonomy
Lange-Bertalot H., Metzeltin D. 1996. Indicators of Oligotrophy. 800 taxa representative of three ecologically distinct lake types. Koenigstein, Koeltz Scientific Books. 390 pp Illustrations; Morphology
Bey M.-Y., Ector L. 2013. Atlas des diatomées des cours d’eau de la région Rhône-Alpes. Centre de Recherche Public Gabriel Lippmann, Vol. 1-6. Morphology; Illustrations
Cvetkoska A., Levkov Z., Hamilton P.B., Potapova M. 2014. The biogeographic distribution of Cavinula (Bacillariophyceae) in North America with the descriptions of two new species. Phytotaxa. 184(4): 181-207. Morphology; Ecology; Illustrations; Taxonomy;
This page should be cited as:

Jüttner I., Ector L. Cavinula cocconeiformis (W.Gregory ex Greville) D.G.Mann & Stickle in Round et al.; 1990; 665. 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=4545. [Accessed:  ].

Image Gallery

Record last modified: 17/01/2022