49 



Navicula alpestris Grim. 

 Navicula arn/phigo'iivphus Eh. 



Ntiriciild niiylica Half's. 



Navicula anglica var. subsalsa Grun. 



Navicula bacillaris Greg. 



.A avicula Brebitsonii Ktz. 



Navicula comiuutata Grun. 



.\avicula ci-yptocephala Ktz. 



Xavicula cuspidata Ktz. 



Navicula fasciata Lag. 



Navicida fa-sciata var. MAECATA Ost. var. nov. (PI. VI I 



fig- 2) (1). 



Navicula gentilis Donk. 

 Navicula gibba Eh. 

 Navicula gracillima Ralfs. 

 Navicula halophila Grun. 

 Navicula iridis Eh. 

 Navicula iridis var. undulata Grun. 

 Navicula limosa Ktz. 

 Navicula inesoU'pta Eh. 



^ticicula mesotepta var. stauronei/ormis Grun. 

 Navicula nobilis Eh. 

 Navicula major Ktz. 

 Navicula menisculus Schum. 

 Navicula oblonga Ktz. 

 Navicula peregrina Heib. 

 Navicula pupula Ktz. 

 Navicula radiosa Ktz. 

 Navicula retusa Breb. 

 Navicula retitsa var. subrecta Brcb 

 Navicula rupestris Hantz. 

 \avicula silicula Eh. 

 Navicula silicula var. ventricosa Donk. 

 Navicula sphaeropliora Ktz. 

 Navicula stauroptera Grun. 

 Navicula stauroptera var. interrupta CJeve. 

 Navicula subcapitata Greg-. 

 N avicula sublinearis Grun. 



(1) Voir pour la description le Travertin de Coudes, p. 12?. 



