Fragilariforma (J. Ralfs) D.M. Williams & F.E. Round


Frustules araphid, rectangular in linear or zig-zag colonies. Valves elliptical, lanceolate or linear with tapering rostrate to capitate apices. Narrow sternum, labiate process and spines present. Apical pore fields simple, extending on the valve face.

Type Species: F. virescens

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.