Fallacia Stickle and Mann


Biraphid valves that are linear lanceolate to elliptical with bluntly rounded poles. Striae are interrupted by lateral hyaline area (sterna). H-shaped plastid consisting of 2 plates that lie against the girdle. The two plates of the plastid are connected by a narrow isthmus that lies against the epivalve. This hyaline area appears as a lyre and bears a strong resemblance to the genus Lyrella. The two vary in valve ultra structure and plastid structure and arrangement. Contains taxa formerly included in Navicula pygmaea. Found in marine and freshwater epipelic habitats.

Light Microscope Image(s)

Each image is accompanied by the genus and species, California Academy of Sciences slide number (ie. CAS 612010), location of the specimen on the slide, and dimension in microns.