Navicula Boyntoniae Guide
Credit: Loren Bahls
  1. Valves broadly lanceolate
  2. Apices narrow subrostrate to apiculate
  3. Areolae elongated and irregular

Stauroneis boyntoniae has broadly lanceolate valves, 31-52 ┬Ám long. The apicies are narrow and subrostrate to apiculate. Areolae are transapically elongated and irregularly spaced.