Spaulding, S.,
Edlund, M.
(2009).
Caloneis.
In Diatoms of North America.
Retrieved February 28, 2025, from https://diatoms.org/genera/caloneis
Symmetric Biraphid
Caloneis
Striae chambered
One or two longitudinal lines may be present
Central area may have irregular thickened areas
Species of Caloneis are characterized by chambered striae, like those of Pinnularia. The chambered striae give the appearance of one to two longitudinal lines. The striae of Caloneis are composed of fine alveoli, also like Pinnularia. The central area of Caloneis may be expanded, and may include silica thickenings that are lunate or...