Encyonema Silesiacum Guide
  1. Valves dorsiventral with strongly arched dorsal margin
  2. Valves up to 49 µm long
  3. Maximum length to width ratio 4.3
  4. Striae 12-17 in 10 µm
  5. Stigmoid at median dorsal stria

Valves are dorsiventral, up to 49 µm long with a strongly arched dorsal margin. The maximum length to width ratio is 4.3. Striae number 12-17 in 10 µm. A single stigmoid lies at the end of the median dorsal stria.