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Cymbella ventricosa Ktz. 



Denticula tennis Ktz. 



Denticula tennis var. intermedia Grun. 



Diploneis elliptica Cleve. 



J'J/ntliciiiia argus Ivtz. 

 Gomphonema intricatum Ktz. 

 Gomphonema parvulum Ktz. 



Hantzschia amphioxys Grun. 

 Melosira Roeseana Kab. 



Navicula appendiculata Ag. 



Navicula bacillaris Greg. 



Nvicula Brebissonii Ktz. 



Navicula cincta Eh. 



Navicula cincta Eli. var. Heufleri Grun. 



Navicula notata M. Per. 



Navicula oblonga Ktz. 



Navicula silicula Eh. 



Navicula silicula var. ventricosa Eh. 



Navicula slre^toraplie Cleve. 



Navicula streptoraphe var. minor Cleve. 



Navicula subcapitata Greg. 



Navicula subcapitata var. paucistriata Grun. 



Navicula viridis Ktz. 



Nitzschia commutata Grun. 



Nitzscliia dubia W. Sm. 



Nitzschia linearis W. Sm. 



Nitzscliia vitrea Norm. 



Nitzschia vitrea var. gallica M. Per. 



Rhopalodia giberula 0. Miill. 



Rhopalodia gibberula var. Fan Heurckii 0. Miill. 



Rhopalodia rupestris 0. Miill. 



Stauroneis anceps Eh. 



Surirella ovalis Ktz. 



Snrirella ovata Ktz. 



Syncdra deli cat its ima W. Sm. 



