Taxon Account

Cavinula pseudoscutiformis (Hustedt) D.G.Mann & A.J.Stickle; 1990; 291

Synonymy

Navicula pseudoscutiformis Hustedt in Pascher 1930

Key references

Hustedt F. 1930. Bacillariophyta (Diatomeae). In: Pascher A. (ed.) Die Süsswasser-Flora Mitteleuropas. Heft 10. Gustav Fischer Verlag, Jena. 466 pp

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

Shape
Valves circular.

Striae
Strongly radiate, uniseriate, punctate striae. Longer and shorter striae alternating in the central part of the valve. The stria density increases from the valve centre to the distal ends of the raphe.

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

Central area
Oval small to medium-sized central area, sometimes indistinct or irregular because it is bordered by striae of varying length.

Raphe
Raphe filiform with straight, expanded proximal ends and distal ends deflected in opposite directions.

Literature

References are given in chronological order.

Reference
Citation
Hustedt F. 1930. Bacillariophyta (Diatomeae). In: Pascher A. (ed.) Die Süsswasser-Flora Mitteleuropas. Heft 10. Gustav Fischer Verlag, Jena. 466 pp Description; Illustrations;
Round F.E., Crawford R.M., Mann D.G. 1990. The Diatoms. Biology & Morphology of the Genera. Cambridge University Press, Cambridge. 747 pp Taxonomy; Morphology
Hofmann G., Werum M., Lange-Bertalot H. 2011. Diatomeen im Süßwasser-Benthos von Mitteleuropa. A.R.G. Gantner, Ruggell. 908 pp Morphology; Taxonomy; Illustrations
Tuji A. 2013. Algae Aquae Dulcis Japonicae Exsiccatae V. 21; 20 pls. 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;

Similar Species

Similar species not published on this website:

Cavinula scutelloides (W. Smith) Lange-Bertalot in Lange-Bertalot & Metzeltin; 1996; 31

This page should be cited as:

Jüttner I. Cavinula pseudoscutiformis (Hustedt) D.G.Mann & A.J.Stickle; 1990; 291. 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=3646. [Accessed:  ].

Image Gallery

Record last modified: 27/12/2020