Asterionella Hassall


Frustules pennate, araphid, elongate, asymmetrical to the transapical axis, symmetrical to the apical axis, striae fine, axial area narrow. Cells are joined at the broadest apex by mucilage pads to form stellate or spiral colonies. Some populations are particularly susceptible to chytrid infestations.

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.