— 3:î — 



Navicula cinota var. Heufieri Grun. 



Navioula daotylw Ktz. 



\ii nciihi gracilUma Ralfs. 



Navicula hemiptera Ktz. 



Navioula legumen Eh. 



Navicula li/mosa Ktz. 



Navioula limosa var. macdlata M. Per. rar. noi;. (PL I 



fig. 15) (1). 

 Navioula Ivmosa var. silicula Grun. 

 Navicula lintosu var. subinflata Grun. 

 Navicula major Ktz. 

 Navicula peregrina Ktz. 

 Navicula pupula Ktz. 

 Navicula pygmaea Ktz. 

 Navicula quinquenocfos Grun. 

 Navicula rupestris Hantz. 

 Navicula sculpta Eli. 

 Navicula sphaerophora Ktz. 



Navicula subcapitata var. stauroneiformis Grun. 

 Navicula ventricosa Eh. 

 Navicula ventricosa var. minuta Grun. 

 Navicula viridis Ktz. 

 Navicula viridis var. commutata Grun. 

 Navicula viridula 1. minor Grun. 

 Nitzschia acummata Grun. 

 Nitzschia. amphibia Grun. 

 Nitzschia denticula Grun. 

 Nitzschia frust/ulwm Grun. 

 Nitzsohia palea W. Sm. 

 NitzscJtia frustulum Grun. 

 Nitzschia palea W. Sm. 

 Nitzschi-a tenuis W. Sm. 

 Nitzschia vitraca Norm. 



Rhoicosph&nia curvata Grun. 

 Rliopalodia constricta 0. Mull. 

 Rhopalodia gibba 0. Mull. 

 Rhopalodia gibba var. ventricosa 0. Mull. 

 Rhopalodia gibberula 0. Mull. 



(1) Pour la description voir le Travertin de St-Marguerite, p. 93 



