Diatoms of North AmericaDiatoms of North America
Return to overview

Guide to Brachysira follis

(Ehrenb.) R.Ross in B.Hartley, R.Ross and D.M.Williams 1986

Brachysira Follis Guide
  1. Valves centrally expanded
  2. Apices broadly rounded
  3. Striae coarse

Valves are centrally expanded and apices are broadly rounded. Striae are coarse.