W. Smith 1853 Category: Nitzschioid
TYPE SPECIES: Tryblionella acuminata W. Smith
Valves are typically linear-lanceolate to elliptical in some species. Like Nitzschia, Tryblionella possesses an eccentric raphe, positioned in a canal along one valve margin. The raphe systems within a frustule are positioned on opposite, in the manner of nitzschioid symmetry. The raphe canal is supported by fibulae. Valves have a distinct longitudinal undulation on the face.
Although Tryblionella was described in 1853, many recent floras include species within Nitzschia. Species within the genus Tryblionella occur in freshwater and marine waters.
Cite This Page:
Spaulding, S. (2011). Tryblionella. In Diatoms of the United States. Retrieved March 31, 2015, from http://westerndiatoms.colorado.edu/taxa/genus/tryblionella
Contributor: Sarah Spaulding - October 2011