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Guide to Cosmioneis citriformis

A.R.Sherwood and R.L.Lowe in R.L.Lowe and A.R.Sherwood 2010

Cosmioneis Citriformis Guide
Credit: Rex Lowe
  1. Valve margins broadly rounded
  2. Ends short, rostrate

Valves are citriform with broadly rounded margins curving to short narrow rostrate ends. The central area is rounded and the proximal raphe ends are slightly expanded externally. Striae are punctate, radiate and curve toward the center of the valve.

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