Taxon Account

Cavinula variostriata (Krasske) Mann in Round, Crawford & Mann; 1990; 665

Synonymy

Navicula variostriata Krasske 1923

Key references

Lange-Bertalot H., Hofmann G., Werum M., Cantonati M. 2017. Freshwater Benthic Diatoms of Central Europe: Over 800 Common Species Used in Ecological Assessment. Cantonati M., Kelly M.G., Lange-Bertalot H. (eds.), Koeltz Botanical Books, Schmitten-Oberreifenberg, Germany. 942 pp

Morphology

Size
15-44 µm long, 5-10 µm wide (Lange-Bertalot et al. 2017).

Shape
Valves linear-elliptic with broadly rounded valve ends and parallel to slightly convex valve margins.

Symmetry
Isopolar, bilaterally symmetrical.

Striae
Striae radiate throughout the valve, slightly curved, 27-30 in 10 µm (Lange-Bertalot et al. 2017).

Axial area
Narrow, linear.

Central area
Large rounded to transverse elliptical, bordered by several shortened striae.

Raphe
Raphe filiform, straight; central pores slightly expanded, distantly spaced near margin of central area.


SEM morphology
Striae composed of rounded areolae. Distal raphe ends deflected to opposite sides a short distance before valve ends.

Literature

References are given in chronological order.

Reference
Citation
Krasske G. 1923. Die Diatomeen des Casseler Beckens und seiner Randgebirge, nebst einigen wichtigen Funden aus Niederhessen. Botanisches Archiv, Königsberg. 3(4): 185-209. Morphology; Description; Illustrations
Krammer K., Lange-Bertalot H. 1986. Süßwasserflora Mitteleuropas. Bacillariophyceae. 1. Teil. Naviculaceae. Eds Ettl H., Gerloff J., Heynig H., Mollenhauer D., Gustav Fischer Verlag, Stuttgart. 876 pp Ecology; Morphology; 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
Lange-Bertalot H., Külbs K., Lauser T., Nörpel-Schempp M., Willmann M. 1996. Diatom Taxa introduced by Georg Krasske Documentation and Revision. Iconographia Diatomologica Vol. 3, Lange-Bertalot H. (ed.), Koeltz Scientific Books, Königstein. 358 pp Morphology; Illustrations
Lange-Bertalot H., Hofmann G., Werum M., Cantonati M. 2017. Freshwater Benthic Diatoms of Central Europe: Over 800 Common Species Used in Ecological Assessment. Cantonati M., Kelly M.G., Lange-Bertalot H. (eds.), Koeltz Botanical Books, Schmitten-Oberreifenberg, Germany. 942 pp Morphology; Illustrations; Ecology;
This page should be cited as:

Jüttner I., Van de Vijver B. Cavinula variostriata (Krasske) Mann in Round, Crawford & Mann; 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=3365. [Accessed:  ].

Image Gallery

Record last modified: 14/10/2022