136 A CATALOG OF ILLINOIS ALGAE 



Closterium striolatum var. elongatum Rab. 



Johnson & Atwell 1890, p. 20, as C. s. var. elongatum: Cook — 



'Big Ditch" (Mar.). 

 C. TURGiDUM Ehr. West «& West, Brit. Desmid. 1: 170. pi. 22. f. 4-5 

 (1904). 



Transeau: Clark, Casey — small stream and pond (Apr., May). 



Coles, Ashmore — pond (June). 

 C. VENUS Kuetz. West & West, loc. cit., p. 137. pi. 15. f. 15-20 (1904). 



Transeau: Coles, Ashmore — pond (Nov.). Johnson & Atwell 



1890, p. 20: Cook, Evanston — ditch N. of town (Apr.). Eddy 



1931B, p. 462: Pulaski, Wetaug^ — sink-hole pond (July). 



COSMARIUM Corda, 1834 



C. BiRETUM var. TRIGIBBERUM Nordst. West & West, Brit. Desmid. 4: 

 28. pi. 101. f. 10-15 (1912). 



Britton: Cook, Golf — small pond about 2 miles W., "May 10, 



1938, #52. 

 C. BOTRYTis Menegh. West & West, loc. cit., p. 1. pi. 96. f. 1, 2, 5-15 

 (1912). 



Transeau: Clark, Casey^ — pond (Sept.). Coles, Charleston — 



ponds (May, July). Johnson & Atwell 1890, p. 20: Cook— "Big 



Woods" (Apr.). Eddy 1931B, p. 462: Pulaski, Wetaug— sink- 

 hole pond (July, Sept.). 

 C. BROOMEi Thw. West & West, loc. cit., p. 24. pi. 100. f. 12 (1912). 



Johnson & Atwell 1890, p. 20: Cook— "Big Woods" (Apr.). 



Transeau: Douglas, Arthur— pond (May). 

 C. CONSTRICTUM Delp. Wolle, Desmids U. S., p. 63. pi. 61. f. 1-4 

 (1892). 



Kofoid 1908, p. 61: Mason, Havana — Illinois River (Mar.- 



Sept.). 

 C. CRENATUM Ralfs. Wcst & West, Brit. Desmid. 4: 35. pi. 98. f. 9-12 

 (1912). 



Transeau: Coles, Charleston^ — ditches (Apr., May). ' 

 C. cucuMis (Corda) Ralfs. West & West, Brit. Desmid. 2: 152. pi. 

 59. f. 18-20 (1905). 



Britton 1940, p. 71: Cook, Glenview^ — swamp and temporary 



pond about 1| miles W., Apr. 7, 1938, #228. 

 C. CURTUM (Breb.) Ralfs. West & West, Brit. Desmid. 1: 97. pi. 10. 

 f. 21, 22 (1904); 5: 267 (1923). 

 Calocylindrus curtus Kirch. 



Johnson & Atwell 1890, p. 20, as Calocylindrus curtus: Cook, 



"Big Woods" (Apr.). 

 C. DENTATUM Wolle. Wolle, Desmids U. S., p. 83. pi. 16. f. 15 (1892). 



Transeau: Coles, Ashmore — pond (June). 



