Biraphid valves, lanceolate to lunate. Distinctive X-shaped hyaline area of thickened silica. Pseudosepta present. Narrow axial area and punctate striae. A montypic genus, limited to the eastern and southern United States.
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.