Aneumastus Minor Guide
Credit: Loren Bahls
  1. Valves elliptic to broadly lanceolate
  2. Apices acute, with blunt ends

Aneumastus minor has small elliptic, to broadly lanceolate, valves. Valve length is less than 35 µm. Apices are acute with either unprotracted or weakly protracted blunt ends.