Muelleria Frenguelli


Biraphid valves, valve outline variable, from linear to linear elliptical. Raphe straight, associated with two longitudial canals parallel to the raphe, one on each side. Raphe with hooked external proximal raphe ends extending unilaterally. Bipartile valves, with loculate puncta.

Muellaria includes the former Navicula taxon, N. gibba. While N. gibba appears to be widespread in aerophilic habitats, othe species are geographically in restricted to the Artic, Antartic or S. America.

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.