TONGUE RIVER (cont.) 



Division: Euglenophyta (Euglenoid Algae) 

 Class: Euglenophyceae 



Genera: Trachelomonas sp. *** 



Division: Chrysophyta (Yellow-green Algae) 

 Class: Bacillariophyceae (Diatoms) 



Division: Cyanophyta (Blue-green Algae) 

 Class: Myxophyceae 



Genera: Anabaena sp. 

 Lyngbya sp. 

 Oscillatoria sp. 



POWDER RIVER 



Division: Chlorophyta (Green Algae) 

 Class: Chlorophyceae 



Genera : Actinastrum hantzschii fluviatile * 

 Ankistrodesmus sp. *, *** 

 Chlamydomonas sp. * 

 Gloeocystis sp. * 

 Scenedesmus q uadricauda * 

 Scenedesmus sp. *** 

 Schroederia sp. *** 



Division: Euglenophyta (Euglenoid Algae) 

 Class: Euglenophyceae 



Genera: Euglena spp. * 



Division: Pyrrophyta (Golden-brown Algae) 

 Class: Dinophyceae 



Genera: Ceratium hirudinella * 



Division: Cyanophyta (Blue-green Algae) 

 Class: Myxophyceae 



Genera: Dactyl ococcopsis acicularis * 

 Oscillatoria sp. *, *** 



■35- 



