CLASSIFIED CATALOG OF ILLINOIS ALGAE 117 



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

 Mercer, New Boston — Edwards River (July); Mississippi River 

 (July, Sept.). Monroe — Mississippi River (June). Morgan, 

 Meredosia — Illinois River. Moultrie, Sullivan — artificial pond 

 (Aug.). Ogle, Grand Detour- — slough (June-Aug.). Piatt, Monti- 

 cello— Sangamon River (June-Aug.). Pike^ — Mississippi River 

 (June). Pulaski — Mississippi River (June); Wetaug — sink-hole 

 ponds (July, Sept., Dec). Randolph, Rock Island — Mississippi 

 River (June-Sept.). Sangamon, Illiopolis, Riverton, Springfield 

 — Sangamon River (June-Sept.). St. Clair — Mississippi River 

 (June). Union, Larue— Wolf Lake (June-Aug.). Whiteside — 

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

 Hatwood Slough (June-Aug.). 



S. QUADRiCAUDA var. QUADRispiNA (Chod.) G. M. Smith. Smith, loc. 



cit., p. 479. pi. 27, 31. f. 43, 167-170 (1916). 



Britton: Cook, Techny — small pond about 1^ miles S.W., May 

 12, 1938, #64. Lake, Waukegan — in Dead River at Dunes Park, 

 May 11, 1939, #255. McHenry, McHenry — swamp on N.E. side 

 of McCullom Lake, July 6, 1939, #385. 



S. QUADRICAUDA var. WESTii G. M. Smith. Smith, loc. cit., p. 480. pi. 



32. f. 177-180 (1916). 



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

 July 12, 1939, #452; Sag Bridge— swamp, Sept. 8, 1939, #984. 

 Lake, Fox Lake — in Fox Lake, Grass Lake, Lake Marie, Petite 

 Lake and connecting channels, July 25, Aug. 25, Sept. 14, 1939, 

 #604, 605, 942, 944, 945, 948, 950, 951, 953, 954, 969, 1028, 1029. 



Order: SIPHONALES 



Family: VAUCHERIACEAE 



DICHOTOMOSIPHON Ernst, 1902 



D. TUBEROSUS (A. Br.) Ernst. Brown, Trans. Amer. Mic. Soc. 48: 



102. pi. 20. f. 38, 39 (1929). 

 Vaucheria tuherosa A. Br. 

 Forbes 1883 A, p. 495, as Vaucheria tuherosa; Drouet, Field Mus. : 

 Cook, Chicago — Lake Michigan; Lemont — in running water and 

 on sides of quarry, coll. by F. Drouet and D. Richards, Apr. 15, 

 1939; Willow Springs — floating in swamp along Route 4A, coll. 

 by P. C. Standley, J. A. Steyermark and F. Drouet, Oct. 18, 

 1938. Dupage, Black Partridge Woods — in a stream, coll. by 

 P. C. Standley, J. A. Steyermark and F. Drouet, Oct. 18, 1938. 

 ColHns 1909, p. 431; Brown 1929, p. 102; Smith 1933, p. 529. 



