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Guide to Staurosira stevensonii

Manoylov, E.Morales and Stoermer 2003

Staurosira Stevensonii Guide
Credit: Gina LaLiberte, Eduardo Morales, Kalina Manoylov
  1. Valves cruciform
  2. Ends capitate to subcapitate
  3. Striae are alternate and slightly radiate at the center to radiate at the ends
  4. Cells joined in colonies

Valves are cruciform and strongly symmetric. Valves are abruptly narrow and extend more than the length of the swollen central area to capitate or subcapitate ends. Marginal spines are present. Separation between cells are visible at the apices, in girdle view.