Stauroneis Absaroka Guide
Credit: Loren Bahls
  1. Axial area broad, often with irregular ends of striae
  2. Broad stauros with curved margins
  3. Proximal raphe ends curved, tipped with drop-like ends
  4. Striae curved near the central area

Stauroneis absaroka has lanceolate valves with subrostrate to subcapitate apices. The axial area is broad and often has irregular borders formed by the striae. Proximal raphe ends are distinctly curved and tipped with drop-like ends. Striae are curved on the margins of the broad stauros.