Guide to Gomphonema johnsonii
Credit: Loren Bahls
- Valves lanceolate
- Apices narrow, subapiculate
- Striae radiate
- Single stigma present
- Central area moderately large
Gomphonema johnsonii has lanceolate valves with narrow subapiculate apices. Striae are radiate and more widely spaced near the valve center. A single stigma is present at the end of the longest central stria. The central area is moderately large.