Eucocconeis
Cleve ex Meister 1912 Category: Monoraphid
TYPE SPECIES: Eucocconeis flexella (Kützing) Meister
Image Credit: Marina Potapova, Eduardo Morales
CLASS: Bacillariophycideae
ORDER: Achnanthales
FAMILY: Achnanthidiaceae
- Frustules with torsional twist about the apical axis
- Central sternum sigmoid
Eucconeis frustules are bent about the median transapical plane, including a twisted, sigmoid central sternum. As a member of the monoraphid group, the frustules are heterovalvar and differ in ornamentation between the raphe valve and rapheless valve.
Eucocconeis species occur commonly in the littoral zone of oligotrophic lakes, within epipelic, epipsammic, or epilithic habitats. Some species occur on wet walls.
Cite This Page:
Spaulding, S., and Edlund, M. (2009). Eucocconeis. In Diatoms of the United States. Retrieved May 22, 2013, from http://westerndiatoms.colorado.edu/taxa/genus/Eucocconeis
Contributor: Sarah Spaulding | Mark Edlund - January 2009
Reviewer: Sam Rushforth
Citations
Antoniades, D., Douglas, M.S.V. and Smol, J.P. (2009). Biogeographic distributions and environmental controls of stream diatoms in the Canadian Arctic Archipelago. Botany 87: 443–454. 10.1139/B09-001
Bouchard, G., Gajewski, K. and Hamilton, P.B. (2004). Freshwater diatom biogeography in the Canadian Arctic Archipelago. Journal of Biogeography 31: 1955-1973.
Enache, M.D. and Potapova, M. (2012). A new species of Eucocconeis (Bacillariophyceae) from North America. Diatom Research 27(2): 75-80. 10.1080/0269249X.2012.663560
Kingston, J.C. (2003). Araphid and Monoraphid Diatoms. In: Freshwater Algae of North America. Ecology and Classification (J.D. Wehr and R.G. Sheath, eds). Elsevier Science pp. 595-636.
Lange-Bertalot, H. and Krammer, K. (1989). Achnanthes eine Monographie der Gattung mit Definition der Gattung Cocconeis and Nachtragen zu den Naviculaceae. Bibliotheca Diatomologica 18, 393 pp. Cramer, Berlin, Stuttgart.
Lichti-Federovich, S. (1979). Contributions to the diatom flora of Arctic Canada: Report I. Scanning electron micrographs of some freshwater species from Ellesmere Island. Current Research, Geological Survey of Canada, Paper 79-01B, pp.71-82.