Genus: Tropidoneis | Diatom
Common West Coast species: T. antarctica
Order: Naviculales
Family: Naviculaceae
Description: Solitary cells. Elliptical or slightly constricted in the center in valve view. Chloroplasts rod-like and numerous, radiating from central nucleus.
Cell Size: 160-350 um
Distribution: Common in Puget Sound in the summer, occasionally found in California waters.
Note: The genus name Tropidoneis has been rejected or reclassified by several sources. Possible synonyms include Plagiotropis, Membraneis, and Navicula.
IFCB images |