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Guide to Gomphoneis herculeana

(Ehrenb.) Cleve 1894

Gomphoneis Herculeana Guide
Credit: Pat Kociolek
  1. Valves lanceolate-clavate
  2. Longitudinal lines present

Valves are large and robust and strongly lanceolate-clavate. The axial area is narrow and straight. The central area is relatively small, irregularly rounded and bears a single stigma. The longitudinal lines are positioned approximately one-half the way between the axial area and margin.

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