146 A CATALOG OF ILLINOIS ALGAE 



E. ACUTissiMA Lemm. Walton, loc. cit., p. 372. f. 10 (1915). 



Eddy 1931A, pp. 481, 484; 1934, p. 388: Cass, Chandlerville— 

 Sangamon River (July). Macon — Lake Decatur (July-Nov.). 

 Menard, Petersburg — Sangamon River (Sept.). Sangamon, Illi- 

 opolis, Riverton — Sangamon River (Sept.). 



E. DESES Ehr. Walton, loc. cit., p. 369. f. 1 (1915). 



Transeau 1913B, p. 72: Coles, Charleston — ponds and -small 

 streams (Mar.). Kofoid 1903, p. 225; 1908, p. 81: Fulton, Mason, 

 Havana^ — Illinois River and backwaters ("summer"). Purdy 

 1930, pp. 68, 132: Peoria, Peoria— Illinois River (July, Aug.). 

 Will, Lockport — DesPlaines River (Oct.). 



E. ELONGATA Schew. Walton, loc. cit., p. 363. pi. 12. f. 5 (1915). 



Kofoid 1908, p. 81: Mason, Havana— Illinois River (July-Oct.). 



E. GENicuLATA Duj. Walton, loc. cit., p. 362. f. 2 (1915). 



Baker 1922, pp. 80, 82-87: Champaign, Urbana— Boneyard 

 Creek, Salt Fork and Spoon River. 



E. GRACILIS Klebs. Walton, loc. cit., p. 368. pi. 13. f. 9 (1915). 



Kofoid 1903, p. 225: Fulton, Mason, Havana— Illinois River and 

 backwaters. 



E. OBLONGA Schmitz. Walton, loc. cit., p. 363. pi. 12. f. 4 (1915). 

 Transeau 1913B, p. 72: Coles, Ashmore — ice pond (Oct.). 



E. oxYURis Schmarda. Walton, loc. cit., p. 369. pi. 14. f. 4 (1915). 

 Hempel 1898, p. 324; Kofoid 1908, pp. 81, 292, 321 (Mason). 

 Purdy 1930, pp. 71, 117, 132, 133, 135, 147, 159, 169 (Calhoun, 

 Fulton, Mason, Peoria, Will). Eddy 1931 A, pp. 479, 481, 484 

 (Cass, Macon, Menard, Sangamon); 1931 B, p. 463 (Pulaski); 

 1934, pp. 385-391, 393, 399, 402, 403 (Adams, Alexander, Cal- 

 houn, Champaign, Hancock, Henry, Jersey, Macon, Madison, 

 Mason, Ogle, Piatt, Pike, St. Clair, Union, Whiteside). 



Adams— Mississippi River (June). Alexander— Horseshoe 

 Lake (June-Aug.). Calhoun — Mississippi River (June); Kamps- 

 ville — Illinois River (June-Aug.). Cass, Chandlerville — Sanga- 

 mon River (July). Champaign, Mahomet — Sangamon River 

 (July, Sept., Nov.). Fulton— Spoon River (June-Aug.). Hancock 

 — Mississippi River (June). Henry, Colona — slough (June- 

 Aug.). Jersey— Mississippi River (June). Macon, Decatur, 

 Harristown — Lake Decatur, Sangamon River (June-Nov.). 

 Madison — Mississippi River (June). Mason, Havana — Illinois 

 River (Mar.-Nov.). Menard, Petersburg — Sangamon River 

 (June, Sept.). Ogle, Grand Detour — slough (June-Aug.). Peoria, 

 Chillicothe, Peoria— Illinois River (June-Nov.). Piatt, Monti- 

 cello — Sangamon River (May). Pike — Mississippi River (June). 

 Pulaski, Wetaug— sink-hole ponds (Apr., July, Sept.). Sanga- 

 mon, Illiopolis, Riverton — Sangamon River (June-Sept.). St. 



