PLANTS OF IOWA 8g 



PLEUROCOCCACE^E FAMILY. 



Protococcus, Ag. 



1086. P. viridis, Ag. (Pluerococeus vulgaris, Menegh.) 

 Common everywhere, on moist wood, trees and • 



HYDRODICTPACEiE FAMILY. 



Hydrodictyon, Roth. 



1087. H. retricxdatum, (L.) Lagerh. 

 In rivers. Rare. 



Pediastrum, Meyen. 



1088. P. boryanum, (Turp.) Menegh. 

 Slough, amid Utricularia. 



1089. P. ehrenbergii, A. Br. 

 Slough, several collections. 



VOLVOCACE^ FAMILY. 



Chlamydomonas, Ehrb. 



1090. C. debaryana, Gorosch. 

 In a puddle after rain. 



Gonium, Muell. 



1091. O. pectorale, Muell. 

 Aquarium; rain water pond. 



Euglena, Ehrb. 



1092. E. viridis, (Schrank) Ehrenb. 

 Common in stagnant water. 



1093. E. spirogyra, Ehrenb. 

 In aquarium. 



Pandorina, Ehrb. 



1094. P. monim, (Muell.) Borry. 

 Aquarium. In pond. 



Eudorina, Ehrb. 



1095. E. elegans, Ehrenb. 

 In ponds. 



Volvox, Ehrb. 



1096. V. globator, (L.) Ehrenb. 

 In ponds; frequent. 



