Home / Diatoms / Pennate / Unicells / Biraphes / Symmetric / Cosmioneis
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Name derivation: cosmio refrs to dust from the atmosphere; neis is derived from naus; Latin navis: ship (Silva 1980)
Classification:
Cosmioneis D.G.Mann and Stickle 1990; 8 of 9 species descriptions are currently accepted taxonomically (Guiry 2013). Order Naviculales; Family Cosmioneidaceae
Morphology:
Biraphe unicells, symmetric, with flat valve faces. External proximal raphe ends are expanded, internally they are anchor-shaped (Spaulding and Edlund 2008). .
Similar genera:
Navicula.
Habitat:
Freshwater, alkaline habitats in North America to date
References:
Guiry, M.D. in Guiry, M.D. & Guiry, G.M. 2013. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 15 January 2013. Round, F.E., Crawford, R.M. & Mann, D.G. 1990). The Diatoms: Biology and morphology of the genera. pp. i-xi, 1-747. Cambridge: Cambridge University Press. Silva, P.C. 1980.Names of classes and genera of living algae. Balm, Schellema & Holkema, Utrecht dr. W. junk bv., Publishers, The Hague. Spaulding, W. and M. Edlund 2008. Cosmioneis. In: Diatoms of the United States. Retrieved May 15, 2014 from http://westerndiatoms.colorado.edu/taxa/genus/Cosmioneis .