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Guide to Pseudostaurosira robusta

(Fusey) D.M.Williams and Round 1988

Pseudostaurosira Robusta Guide
Credit: Ian Bishop
  1. Valves bi-undulate
  2. Axial area wide
  3. Areolae coarse

Valves with two undulations on the valve margin and sub-capitate to capitate ends. The axial area is wide and linear. The areolae are distinctly round, coarse and visible in LM.