Robuta

https://www.preprints.org/manuscript/202406.1040 The Perizonium Ultrastructure, Divided Apical Pore Fields, Various Pore Occlusions and Visible... The initial valves of two Cymbella species are observed under the scanning electron microscope and the perizonium ultrastructure of Cymbella is revealed for... apical poreperizoniumultrastructuredivided