Figure 2
From: Ardissonea crystallina has a type of sexual reproduction that is unusual for centric diatoms
Ardissonea crystallina (C. Agardh) Grunow growth form by light microscopy, differential interference contrast. (a) A colony constituted by cells of two different size classes; differently-sized cells represent two different clones. (b) Multiple discoid chloroplasts dispersed throughout the cell cytoplasm. (c) Cells in the colony are attached by one end to the common mucilage pad secreted through the cell apex. Scale bars (a) = 100; (b,c) = 20 µm.
