Stauroneis Tackei Guide
Credit: Loren Bahls
  1. Valves linear-lanceolate, up to 30 µm long
  2. Apices broadly rounded
  3. Striae fine, 20-30 in 10 µm
  4. Central area a rectangular fascia

Valves are linear-lanceolate, up to 30 µm long, with broadly rounded apices. The central area is a rectangular fascia. Striae are fine and weakly radiate. Areolae are difficult to resolve in LM. Unlike species of Stauroneis, species of Staurophora have a single lobed chloroplast (not shown) and a preference for waters with elevated electrolytes.