Diatoms of North AmericaDiatoms of North America
Return to overview

Guide to Psammothidium rossii

(Hust.) Bukht. and Round 1996

Psammothidium Rossii2 Guide
  1. Ends slightly protracted
  2. Valves bent
  3. Central area on raphe valve a narrow rectangular
  4. Central area on rapheless valve lanceolate

Valves are elliptic-lanceolate with slightly protracted ends. The valves are distinctively flexed. On the raphe valve, the central area is narrowly rectangular. On the rapheless valve the central area is lanceolate.