Stauroneis Sacajawea Guide
Credit: Loren Bahls
  1. Valves lanceolate
  2. Apices subrostrate
  3. Pseudosepta present
  4. Proximal raphe ends bent to one side
  5. Striae 23-25 in 10 μm

Stauroneis sacajaweae has medium-sized lanceolate valves (10-15 μm wide) with subrostrate apices and a pseudoseptum under each apex. Proximal raphe ends are bent to the same side. Striae number 23-25 in 10 μm.