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Guide to Psammothidium subatomoides

(Hust.) Bukht. and Round 1996

P Subatomoides Guide
Credit: Marina Potapova
  1. Valves small and elliptic
  2. Raphe valve with 'bow tie-shaped' central area
  3. Striae radiate

Valves are very small and elliptic, with radiate striae. The raphe valve has a 'bow-tie-shaped' central area.

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