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Guide to Gomphonema variostriatum

Camburn and D.F.Charles 2000

Gomphonema Variostriatum Guide
Credit: Ian Bishop
  1. Valves clavate
  2. Central area asymmetric
  3. Strong stria density gradient from mid-valve to apices

Valves clavate, with a narrowly rounded footpole. The central area is distinctly asymmetric due to a single extended middle stria, which reaches from one margin to a single isolated stigma near the apical axis. Striae greatly increase in density toward the apices.

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