Krammer 2003 Category: Asymmetrical biraphid
TYPE SPECIES: Cymbella delicatula Krammer
Delicata valves are slightly asymmetrical to the apical axis and symmetrical to the transpical axis. The valve shape is narrow and lanceolate. The raphe is distinctly lateral and becomes reverse-lateral at the proximal ends. The terminus of the raphe is thin, comma shaped, and terminal raphe fissures are deflected toward the dorsal side. Valves lack a distinct central area. Stigmata are absent. The striae are fine and usually number more than 18 in 10 µm.
Delicata was recently segregated from Cymbella sensu lato.
Cite This Page:
Spaulding, S., and Edlund, M. (2009). Delicata. In Diatoms of the United States. Retrieved May 23, 2013, from http://westerndiatoms.colorado.edu/taxa/genus/Delicata
Reviewer: Sam Rushforth