Eunotia C.G. Ehrenberg; 1837; 44
Key references
Lange-Bertalot H., Bąk M., Witkowski A. 2011. Eunotia and some related genera. Diatoms of European Inland Waters and Comparable Habitats. A.R.G. Gantner Verlag K.G., Ruggell. 747 pp
Furey P. C., Lowe R. L., Johansen J. R. 2011. Eunotia Ehrenberg (Bacillariophyta) of the Great Smoky Mountains National Park, USA. Bibliotheca Diatomologica. Vol. 56. 133 pp
Morphology
Valves dorsiventral (asymmetric to the apical axis), often curved (lunate), symmetrical to the transapical axis. Dorsal margin convex, smooth or undulate, ventral margin straight or concave; poles rounded to capitate. Frustules almost quadrate or rectangular in girdle view, often lying in girdle view. Sometimes spines along the valve face/mantle junction.
Striae uniseriate with small, round areolae without occlusions, parallel to radiate, sometimes irregularly spaced. Narrow sternum near the edge of the valve face.
Raphe slits short and restricted to the areas near each pole. Raphe not coincident with the sternum, but to one side and lying mainly on the mantle, curved slightly or strongly onto the valve face near the apices with often conspicuous terminal fissures which curve towards the dorsal margin or back towards the valve centre. Raphe often only visible in girdle view.
Usually one rimoportula per valve near the pole, at opposite ends in epi- and hypovalves.
Several open girdle bands with rows of pores.
Plastids variable: sometimes a single ventral chloroplast; or two elongate chloroplasts stretching the whole length of the cell on the ventral side of the cell, each extending also onto one of the valves; or several plate-like chloroplasts.
Striae uniseriate with small, round areolae without occlusions, parallel to radiate, sometimes irregularly spaced. Narrow sternum near the edge of the valve face.
Raphe slits short and restricted to the areas near each pole. Raphe not coincident with the sternum, but to one side and lying mainly on the mantle, curved slightly or strongly onto the valve face near the apices with often conspicuous terminal fissures which curve towards the dorsal margin or back towards the valve centre. Raphe often only visible in girdle view.
Usually one rimoportula per valve near the pole, at opposite ends in epi- and hypovalves.
Several open girdle bands with rows of pores.
Plastids variable: sometimes a single ventral chloroplast; or two elongate chloroplasts stretching the whole length of the cell on the ventral side of the cell, each extending also onto one of the valves; or several plate-like chloroplasts.
Literature
References are given in chronological order.
Reference |
Citation |
|---|---|
| Ehrenberg C.G. 1837. Über ein aus fossilen Infusorien bestehendes, 1832 zu Brod verbackenes Bergmehl von den Grenzen Lapplands in Schweden. Bericht über die zur Bekanntmachung geeigneten Verhandlungen der Königlich-Preussischen Akademie der Wissenschaften zu Berlin 1837. 43-45 pp | Morphology; Taxonomy; Description |
| Mann D.G., Chepurnov V.A., Idei, M. 2003. Mating system, sexual reproduction, and auxosporulation in the anomalous raphid diatom Eunotia (Bacillariophyta). Journal of Phycology. 39: 1067-1084. | Morphology; Biology; Illustrations |
| Kociolek J.P., Spaulding S.A. 2003. Eunotioid and asymmetrical naviculoid diatoms. Freshwater Algae of North America. Academic Press, Eds. J.D.Wehr, R.G.Sheath. 655-668 pp | Morphology; Illustrations; Taxonomy |
| Metzeltin D., Lange-Bertalot H. 2007. Tropical diatoms of South America II. Special remarks on biogeography disjunction. Iconographia Diatomologica, Vol. 18., Annotated Diatom Micrographs. Diversity-Taxonomy-Biogeography. H. Lange-Bertalot (ed.), A.R.G. Gantner Verlag K.G. 877 pp | Morphology; Taxonomy; Illustrations |
| Lange-Bertalot H., Bąk M., Witkowski A. 2011. Eunotia and some related genera. Diatoms of European Inland Waters and Comparable Habitats. A.R.G. Gantner Verlag K.G., Ruggell. 747 pp | Morphology; Taxonomy; Illustrations |
| Furey P. C., Lowe R. L., Johansen J. R. 2011. Eunotia Ehrenberg (Bacillariophyta) of the Great Smoky Mountains National Park, USA. Bibliotheca Diatomologica. Vol. 56. 133 pp | Morphology; Taxonomy; Illustrations; |
| Pavlov A., Levkov Z. 2013. Diversity and distribution of taxa in the genus Eunotia Ehrenberg (Bacillariophyta) in Macedonia. Phytotaxa. 86(1): 1-117. | Morphology; Taxonomy; Illustrations; Ecology |
| Kulikovskiy M., Lange-Bertalot H., Witkowski A., Khursevich G.K., Kociolek J.P. 2015. New species of Eunotia (Bacillariophyta) from Lake Baikal with comments on morphology and biogeography of the genus. Phycologia. 54(3): 248-260. | Morphology; Taxonomy; Illustrations |
| Reavie E.D., Kireta A.R. 2015. Centric, Araphid and Eunotioid Diatoms of the Coastal Laurentian Great Lakes. Bibliotheca Diatomologica. 62: 184. | Morphology; Ecology; Illustrations |
| de Almeida F.F., Santos-Silva E.N., Ector L., Wetzel C.E. 2018. Eunotia amazonica sp. nov. (Bacillariophyta), a common stalk-forming species from the Rio Negro basin (Brazilian Amazon). European Journal of Phycology. https://doi.org/10.1080/09670262.2017.1402372. | Morphology; Taxonomy; Biology; Illustrations |
Similar Species
Similar species not published on this website:
This page should be cited as:
Mann D. G., Kelly M., Jüttner I. Eunotia C.G. Ehrenberg; 1837; 44. In: Jüttner I., Carter C., 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=3713. [Accessed:
].
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Record last modified: 27/12/2020