88 STATE HORTICULTURAL SOCIETY 



1072. R. polymorphum, Fresen. 

 Common in stagnant water. 



1073. R. polymorphism, var. aciculare, (A. Br.) Rabenh. 

 In stagnant water. 



Glgeocystis, Naeg. 



1074. G. gig as, (Kuetz.) Lagorh. 

 Porphyridium, Naeg. 



1075. P. cruentum, (Ag.) Naeg. 

 On stone walls. 



Tetraspora, Ag. 



1076. T. lubrica, Ag. 

 On wet stones. 



1077. T. gelatinosa, (Vauch.) Desv. 

 In springs and pools. 



Palmellococcus. 



1078. P. miniatus, (Kuetz.) Chodat. 

 Under limestone arch. College 



TETRiEDON. 



1079. T. longispium, (Perty) Hausg. 

 Bed of creek below filter beds. 



CHJETOPELTIDE^ffi FAMILY. 



Chtetospileridium. 



1080. C. globosum, (Nordst.) Klenahn. 

 Pond. 



PROTOCOCCACE.E FAMILY. 



Scenedesmus, Meyen. 



1081. 8. bijugatus, (Turp.) Kuetz. 

 Slough, amid Utricularia. 



1082. 8. quadricauda, (Turp.) Breb. 

 Common. 



1083. S. quadricauda, var. abundans. 

 Very common. 



1084. S. obliquus, Kuetz. 



1085. 8. obliquus, var. dimorphus, Rabenh. 

 With plant from northern Iowa. 



