| gomphonema subclavatum var. commutatum | | USA: Iowa | | 725655724 |
| gomphonema subclavatum var. commutatum | | USA: Iowa | | 725655500 |
| gomphonema subclavatum var. commutatum | | USA: Iowa | | 725655289 |
| gomphonema subclavatum var. commutatum | | USA: Iowa | | 725655055 |
| gomphonema subclavatum var. commutatum | | USA: Iowa | | 725654855 |