82 ILLINOIS ACADEMY OF SCIENCE 



Microspora tumidula Hazen. 



Found in an aquarium, the material having been col- 

 lected from Hodgen's pond. Fide Collins. 



Cylindrocapsaceae 



Cylindrocapsa geminella minor Hansgirg. 



Common in the ponds at Charleston and Ashmore. 

 Vegetative material may be seen at all times. Fruit- 

 ing occurs during June. 



Oedogoniaceae 



Oedogonium acmandrium Elfving. 



Found in aquarium, material from Marshall pond, early 

 spring, 1913. Dimensions slightly larger than those 

 given by Hirn. Each antheridium produces a single 

 sperm ! 

 Oedogonium acrosporum De Barry- 



The form connectens occurred in Marshall pond during 

 May, 1912. 

 Oedogonium aster Wittrock. 



This form is apparently the rarest of the spiny spored 

 forms. It has been collected at Charleston and Green- 

 up. The Charleston material has dwarf males with two 

 antheridia ! 

 Oedogonium Borisianum (Le CI.) Wittrock. 



Found at Marshall pond north of Charleston in May, 

 1912. 

 Oedogonium Boscii (Le CI.) Wittrock. 



Has been collected from the east Big Four pond, and the 

 pond on the campus. 

 Oedogonium Brauni Kuetz. Pringsh. 



Foujid in the pond just west of Greenup, along the Van- 

 dalia R. R. 

 Oedogonium cardiacum (Hass.) Wittrock. 



Not uncommon. Has been recorded from ponds in the 

 vicinity of Charleston. Greenup, Newton and Casey. 

 Oedogonium cardiacum carbonicum Wittrock. 



Rather common in Marshall pond in May. 1912. 

 Oedogonium concatenatum (Hass.) Wittrock. 



Collected at west Big Four pond, Charleston. May. 1911. 



Oedogonium crassiusculum idioandrosporum Wittr. & Nordst. 



Common in the more permanent ponds. Very irregular 



in its time of abundance and fruiting. Recorded from 



Charleston, Casey and Newton. 



Oedogonium crassum amplum (Magn. & Wille) Hirn. 



I have seen its vegetative filaments among other algae a 

 number of times. It fruited in the east Big Four pond 



