Tndea . 



lldii 



NAVICULACEAE 

 NAVICULAE MESOLEIAE 

 NAVICULAE ORTHO- 



STICE \i: 

 NAVICULAE LINEOLATAE 

 NAVICULAE MINUSCULAE 

 iSTAVICULOIDEAE 

 NEIDIUM 

 NETRI1 M 

 NITZSCHTA 

 NITZSCHIELLA 

 NITZSCHIOIDEAE 

 NODULARIA . 

 NOSTOC . 

 NOSTOCACEAE . 



O 



obliquus (Scenedesmus ) 

 obliquus var. dimorphus 

 oblonga (Anabaena) 

 oblonga (Trachelomonas | 

 oblongum (Penium) 

 oblongum (Netrium) 

 oblongum var. cylindrieum 

 obtusatum (Cosmarium ) . 

 obtusus (Scenedesmus) 

 obtusus var. alter nans 

 OEDOGONIACEAE 

 OEDOGONIALES 

 OEDOGONIUM . 

 OOCYSTACEAE. 

 OOCYSTIS 



operculata (Cyclotella) 

 OPHIOCYTIUM . 

 orbicularis | Spirogyra | 

 ornata (Cylindroeystis) 

 oscillarina (Ulothrix) 

 OSCILLATORIA . 

 OSCILLATORIACEAE 

 ovalis (Amphora) 

 ovalis (Navicula) . 

 ovalis (Surirella) . 

 ovatum (Pleurotaenium) 

 uriit ii in ( Docidium) 

 ovum (Lepocinclis) 

 ovum var. globula 

 oxyuris (Euglena) 



pachydermia (Conferva) . 

 pachyderma (Microspora) 

 palea (Nitzschia) . 

 PANDORINA . 

 parvulum (Closterium) . 

 parvulum (Gompbonema) 

 parvulum (Ophiocytium ) 

 pectinalis (Eunotia) 

 PEDIASTRUM . 



