150 A CATALOG OF ILLINOIS ALGAE 



Mississippi River (July, Sept.); Erie — Rock River and Rock 

 River and Hatwood Sloughs (June-Aug.)- 



P. LONGiCAUDA var. TORTA Lemm. Walton, loc. cit. (1915). 



Britton: Cook, Park Ridge — DesPlaines River at Touhy Ave., 

 July 12, 1939, #452. Lake, Fox Lake— in Lake Marie, Sept. 14, 

 1939, #1030. 



P. PLEURONECTES (O. F. M.) Duj. Walton, loc. cit., p. 380. pi. 16. f. 9 



(1915). 



Kofoid 1908, pp. 85, 292, 323 (Mason). Transeau 1913B, p. 73 

 (Coles). Eddy 1931A, pp. 481, 484 (Macon, Sangamon); 1934, 

 pp. 392, 393, 396, 397 (Champaign, Piatt). Britton (Cook, Lake, 

 McHenry). 



Champaign, Seymour — temporary pond (Feb.-July) ; Urbana 

 — ox-bow pond (July, Aug.). Coles, Charleston — ponds (Apr.). 

 Cook, Argonne Forest Preserve — swamps and ponds at 95th St. 

 and 96th Ave., 95th and 100th Aves., 95th St. and 104th Ave., W. 

 of Wolf Road on Archer Ave., and at Palos Golf Club, July 13, 

 Sept. 8, 1939, #477, 484, 492, 493, 515, 529, 534, 988, 996; Glen 

 view — swamp and pond about 1| miles W., Apr. 7, 1939, #228; 

 Goeselville — small ponds on Harlem Ave. at 143rd St., July 14, 

 1939, #578, 581, 587; Morton Grove— small ponds. May 10, 

 Oct. 3, 1938, #43, 217; Northbrook — ponds and swamps at 

 Somme Forest Preserve, June 27, 1938, May 8, July 3, 1939, 

 #113, 250, 252, 350; Or land Park- — small pond and extensive 

 swamp on 131st St., W. of Wolf Road, Sept. 8, 1939, #1018; Park 

 Ridge— DesPlaines River at Touhy Ave., July 12, 1939, #452; 

 Sag Bridge — quarry pond N. of, and small pond E. of Archer 

 Ave. on McCarthy Road, Sept. 8, 1939, #1011, 1014; Schnells 

 Corner — small pond at Elk Grove Forest Preserve, June 22, 

 1939, #324; Skokie — swamp at Dempster Golf Club, Oct. 3, 

 1938, #213, small pond at Dempster St. and Milwaukee Ave., 

 Apr. 2, 1938, #1 ; Wheeling— DesPlaines River at Dam #1 (Hintz 

 Road) and at Dundee Road, Aug. 8, 1939, #766, 777. Lake, 

 Everett — small pond S. of. May 15, 1938, #71 ;Fox Lake — Nipper- 

 sink Creek, July 25, 1939, #601 ; Libertyville — small pond 2 miles 

 N.E., July 14, 1938, #121; Mundelein— Hawthorne Drainage 

 Ditch at Route 59A, July 29, 1938, #182; Prairie View— swamp, 

 July 29, 1938, #184; Volo— bog at Tamarack Farm, June 3, 1939, 

 #294. Macon — Lake Decatur (July). Mason, Havana — Illinois 

 River (June-Sept.). McHenry, Greenwood — swamp about 2 

 miles N.E., July 6, 1939, #396, Nippersink Creek, July 7, 1939, 

 #432; Harvard— Kishwaukee River, July 8, 1939, #438; Mc- 

 Henry— swamp E. of McCullom Lake, July 6, 1939, #374; Wood- 

 stock— swamp 2 miles S.E., July 7, 1939, #401, 403. Piatt, 



