Diatoms of North AmericaDiatoms of North America
Return to overview

Guide to Gomphosinica geitleri

(Kociolek and Stoermer) Kociolek et al. 2015

Gomphoneis Geitleri Guide
Credit: Frank Pickett, Marina Potapova
  1. Headpole broad, subrostrate
  2. Stigma present
  3. Helictoglossae distinct

Valves are clavate. An isolated stigma is present in the central area, at the end of one stria. The helictoglossae are distinct. Striae are biseriate to arranged in a quincunx, although this feature is not discernible in LM.