Table 1. Percent frequency of occurrence of algae taxa at all stations 

 in the Yellowstone River. 



Taxa 



^acillariophyceae (Diatoms) 

 :iadophora glomerata 

 )scillatoria 

 llothrix 



itigeoclonium 



ilosterium 



iosmarium 



icenedesmus 



'hormidium 



ipirogyra 



lydrurus foetidus 



licrospora 



lougeotia 



nkistrodesmus 



ynqbya 



nteromorpha 



'edogonium 



taurastrum 



nabaena 



ediastrum 



hlorella ~ 



hlamydomonas 



uglena 



erismopedia 



pirulina 



lanktosphaeria 



elenastrum 



hamaesiphon incrustans 



ivularia 



alothrix 



ylindrocapsa 



omphosphaeria 



oniochloris 



yella 



icrocoleus 



onostroma 



oc ystis 



hacus 



etraspora 



ribonenia 



-11- 



