Synedra
Ehrenberg 1830 Category: Araphid
TYPE SPECIES: Synedra ulna (Nitzsch) Ehrenberg
CLASS: Fragilariophyceae
ORDER: Fragilariales
FAMILY: Fragilariaceae
- Cells robust, linear to lanceolate with rounded to capitate ends
- Striae parallel
- Apical porefield present at each pole
- Rimoportula present near each apex
Frustules are robust and typically needle-like. Cells typically form radiate colonies with cells attached by mucilage pads.
Synedra ulna was recently separated, with many other freshwater taxa, and is now considered to reside in the genus Ulnaria (Compere 2001).
Cite This Page:
Spaulding, S., and Edlund, M. (2008). Synedra. In Diatoms of the United States. Retrieved January 29, 2015, from http://westerndiatoms.colorado.edu/taxa/genus/Synedra
Contributor: Sarah Spaulding | Mark Edlund - December 2008
Citations
Compère, P. (2001). Ulnaria (Kützing) Compère, a new genus name for Fragilaria subgen. Alterasynedra Lange-Bertalot with comments on the typification of Synedra Ehrenberg. In Jahn R., Kociolek, J. P., Witkowski, A. & Compère, P. (Eds.). Lange-Bertalot-Festschrift, Studies on Diatoms. A.R.G. Gantnter Verlag K.G. Ruggell. pp. 97-101.
Lange-Bertalot, H. and Compère, P. (2001). Fragilaria subgen. Ulnaria, comb. nov., the correct name of the subgenus including Synedra ulna, when treated in Fragilaria. Diatom Research 16: 103-104.
Siver, P.A., Hamilton, P.B., Stachura-Suchoples, K. and Kociolek, J.P. (2005). Diatoms of North America. The Freshwater Flora of Cape Cod. Iconographia Diatomologica 14: 1-463.