Stauroneis separanda has smaller valves with more prominent apices. Unlike small valves of S. smithii, which have smooth margins, small valves of S. separanda possess triundulate margins. Stauroneis smithii var. incisa valves are larger, less undulate, and have a higher stria density.
Diatoms of North America relies on the financial support of our user community. We aim to build our technical content by engaging diatomists at all levels and training the next generation. We need you to reach our 2025 fundraising goal of $25,000.
If you use and appreciate DONA, make your DONAtion today.