138 A CATALOG OF ILLINOIS ALGAE 



Johnson, Bull. Torr. Bot. Club 22: 293. pi. 240. f. 30 (1895). 



Britton: Cook, Sag Bridge— swamp, July 13, 1939, #493, 496. 

 C. PROTRACTUM (Naeg.) DeBary. West & West, Brit. Desmid. 3: 181. 

 pi. 82. f. 8; pi. 94, f. 4, 5 (1908). 



Johnson & Atwell 1890, p. 20; Johnson 1894, p. 287: Cook, 



Evanston; Winnetka (Apr.). 

 C. PUNCTULATUM Breb. West & West, loc. cit., p. 206. pi. 84. f. 13-14; 

 pi. 102, f. 22 (1908). 



Transeau: Coles, Ashmore — pond (Nov.). 

 C. QUADRUM Lund. West & West, Brit. Desmid. 4: 20. pi. 100. f. 3-6 

 (1912). 



Transeau: Coles, Ashmore^ — pond (June). 

 C. QUINARIUM Lund. West & West, Brit. Desmid 3: 216. pi. 85. f. 

 9, 10 (1908). 



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

 C. RECTANGULARE Grun. West & West, loc. cit., p. 54. pi. 70. f. 1-2 

 (1908). 



Britton: Cook, Sag Bridge — small shallow pond, July 13, 1939, 



#510. 

 C. RENIFORME (Ralfs) Arch. West & West, loc. cit., p. 157. pi. 79. 

 f. 1-2; pi. 82. f. 15 (1908). 



Transeau: Douglas, Arthur — pond (May). 

 C. SEXANGULARE Lund. West & West, loc. cit., p. 81. pi. 72. f. 3 (1908). 



Transeau: Douglas, Arhtur — pond (May). 

 C. SEXANGULARE f. MINIMA Nordst. West & West, loc. cit., p. 82. f. 4-5 

 (1908). 



Britton 1940, p. 71: Cook, Morton Grove — small pond about 1 



mile N.W., June 23, 1938, #77. 

 C. SPECIOSUM Lund. West & West, loc. cit., p. 247. pi. 89. f. 1-3 (1908). 



Transeau: Coles, Ashmore, Charleston^ — ditches and ponds 



(Apr., May). 

 C. SUBCOSTATUM Nordst. West & West, loc. cit., p. 236. pi. 87. f. 3-5 

 (1908). 



Transeau: Clark, Casey — pond (May). Coles, Ashmore — pond 



(Nov.). 

 C. SUBCRENATUM Hantz. West & West, loc. cit., p. 228. pi. 86. f. 10-14 

 (1908). 



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

 C. SUBIMPRESSULUM Borge. West & West, Trans. Linn. Soc. Lond. 

 2nd Sen 5: 247. pi. 15. f. 18 (1896). 



Transeau: Coles, Ashmore — pond (June, Nov.). 

 C. suPRASPECiosuM Wolle. Wolle, Desmids U. S., p. 95. pi. 61. f. 5, 6 

 (1892). 



Transeau: Clark, Casey — pond (May). 



