girdle and valve views

描述：

Diatoma (die-at-home-a ... ish), filamentous centric diatom. Cells are not circular in cross section by compressed - as can be seen in the cell to the left. Cell with internal strengthening ridges. Many small peripheral chloroplasts and a central nucleus. May form very long filaments, this sample collected from a large (easily visible with the naked eye) clump. Differential interference contrast.