Nitzschia amphibia f. abbreviata
Nitzschia amphibia var. acutiuscula
Nitzschia amphibia var. thermalis
Nitzschia amphibia var. australis
Nitzschia amphibia var. frauenfeldii
Nitzschia amphibia var. amphibia
Nitzschia amphibia var. intermedia
Nitzschia amphibia f. rostrata
Nitzschia amphibia var. umbrosa