Taxon Account

Microcostatus krasskei (Hustedt) J.R. Johansen & Sray; 1998; 98


Navicula krasskei Hustedt 1930

Key references

Johansen J. R., Sray J. C. 1998. Microcostatus gen. nov., a new aerophilic diatom genus based on Navicula krasskei Hustedt. Diatom Research. 13(1): 93-101.


Valves lanceolate or rhombic-lanceolate, cuneate or narrowly rounded ends not or slightly protracted.

Isopolar, bilaterally symmetrical.

Striae radiate, hardly discernible, 45-55 in 10 µm (Lange-Bertalot et al. 2017).

Raphe straight, located on thickened sternum, adjacent to sternum a less silicified area of the valve forming a lanceolate depression.

SEM morphology
Terminal raphe fissures curved to the same side, sternum centrally constricted on the same side; strongly silicified parts of valve adjacent to valve margins bear striae composed of round and transversally elongate areolae.


References are given in chronological order.

Hustedt F. 1930. Bacillariophyta (Diatomeae). In: Pascher A. (ed.) Die Süsswasser-Flora Mitteleuropas. Heft 10. Gustav Fischer Verlag, Jena. 466 pp Morphology; Description; Type Illustration
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 Morphology; Ecology; Illustrations
Simonsen R. 1987. Atlas and Catalogue of the Diatom Types of Friedrich Hustedt. J. Cramer in der Gebrüder Borntraeger Verlagsbuchhandlung, Berlin, Stuttgart. Morphology; Type Illustration
Johansen J. R., Sray J. C. 1998. Microcostatus gen. nov., a new aerophilic diatom genus based on Navicula krasskei Hustedt. Diatom Research. 13(1): 93-101. Morphology; Taxonomy; Illustrations
Kociolek J.P., Spaulding S.A. 2003. Symmetrical naviculoid diatoms. In: Wehr J.D., Sheath R.G., Kociolek J.P. (eds.) Freshwater Algae of North America. Academic Press, San Diego. 637-653 pp Morphology; Illustrations
Lowe R.L., Furey P.C., Ress J.A., Johansen J.R. 2007. Diatom biodiversity and distribution on wetwalls in Great Smoky Mountains National Park. Southeastern Naturalist. 1: 135-152. Ecology
Veselá J. 2009. Spatial heterogeneity and ecology of algal communities in an ephemeral sandstone stream in the Bohemian Switzerland National Park, Czech Republic. Nova Hedwigia. 88(3-4): 531-547. Ecology
Veselá J., Johansen J.R. 2009. The diatom flora of ephemeral headwater streams in the Elbsandsteingebirge region of the Czech Republic. Diatom Research. 24(2): 443-477. Morphology; Illustrations; Ecology
Wojtal A.Z. 2013. Species composition and distribution of diatom assemblages in spring waters from various geological formations in southern Poland. 59. Bibliotheca Diatomologica. 436 pp Morphology; Illustrations; Ecology
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; Ecology; Illustrations
Peeters V., Ector L. 2019. Atlas des diatomées des cours d'eau du territoire bourguignon. Vol. 3. Naviculacées partie 1. Adlafia, Amphipleura, Aneumastus, Anomoeoneis, Berkeleya, Biremis, Brachysira, Caloneis, Cavinula, Chamaepinnularia, Craticula, Diadesmis, Eolimna, Fallacia, Fistulifera, Geissleria, Gyrosigma, Hippodonta, Humidophila, Luticola, Mayamaea, Microcostatus, Neidiomorpha, Neidium, Nupela, Playaensis, Pseudofallacia, Sellaphora. Direction Régionale de l'Environnement, de l'Aménagement et du Logement Bourgogne-Franche-Comté, Dijon. 324 pp. Morphology; Illustrations; Ecology
Boggero A., Zaupa S., Musazzi S., Rogora M., Dumnicka E., Lami A. 2019. Environmental factors as drivers for macroinvertebrate and diatom diversity in Alpine lakes: new insights from the Stelvio National Park (Italy). Journal of Limnology Ecology
This page should be cited as:

Jüttner I., Van de Vijver B., C.E. Wetzel, Ector L. Microcostatus krasskei (Hustedt) J.R. Johansen & Sray; 1998; 98. 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 [Accessed:  ].

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Record last modified: 29/09/2021