CLASSIFIED CATALOG OF ILLINOIS ALGAE 139 



C. TRIPLICATUM Wollc. Wolle, loc. ctL, p. 79. pi. 22. f. 3-6 (1892). 



Transeau: Coles, Ashmore, Charleston — ponds (June, Nov.). 

 C. TURPiNii Breb. West & West, Brit. Desmid. 3: 189. pi. 82, 83. f. 

 16-17, 1 (1908). 



Transeau: Coles, Ashmore — small stream and pond (May, 



Nov.). 



COSMOCLADIUM Brebisson, 1856 



C. SAXONICUM DeBary. West & West, Brit. Desmid. 5: 202. pi. 158. 

 f. 13-16 (1923). 



Kofoid 1908, pp. 60, 61: Mason, Havana^ — Illinois River (Aug., 

 Sept.). 



DESMIDIUM Agardh, 1825 



D. APTOGONUM Breb. West & West, loc. cit., p. 242. pi. 164. f. 1-3 

 (1923). 



Britton: Lake, Waukegan^ — in Dead River at Dunes Park, May 



11, 1939, #255. 

 D. GREViLLEi DeBary. Smith, Bull. Wis. Geol. & Nat. Hist. Surv. 

 57 (2): 145. pi. 88. f. 8 (1924). 



Britton: McHenry: Greenwood — swamp in Game Preserve 



about 1| miles N.W., July 6, 1939, #396, 397; Ringwood— small 



pond about 1 mile N.W., July 6, 1939, #398. 



D. SWARTZII Ag. West «& West, Brit. Desmid. 5: 246. pi. 163. f. 5-8 

 (1923). 



Transeau 1916, p. 125: Clark, Casey — pond (May). Coles, Ash- 

 more, Charleston — small stream and ponds (May-July, Nov.). 

 Britton: Cook, Argonne Forest Preserve^ — Maple Lake, July 13, 

 1939, #493; Palos Park— small pond, July 14, 1939, #578; Sag 

 Bridge — ponds and swamps, July 13, Sept. 8, 1939, #505, 529, 

 996, 998, 1021; Schnells Corner— ponds at Elk Grove Forest 

 Preserve, Aug. 8, 1939, #780, 786, 790, 791. Lake, Volo— bog at 

 Tamarack Farm, June 3, 1939, #294. 



EUASTRUM Ehrenberg, 1832; Ralfs, 1844 



E. JOHNSONII West & West. Krieger in Rab., Kryptog.-fl. Deutsch. 

 13 (1): 542. pi. 73. f. 20-21 (1937). 



Transeau: Clark, Casey — pond (May). 

 E. OBLONGUM (Grev.) Ralfs. West & West, Brit. Desmid. 2: 12. pi. 34, 

 35. f. 7-9, 2 (1905). 



Britton: Lake, Volo — bog at Tamarack Farm, June 3, 1939, 



#294. 

 E. PULCHELLUM Breb. West & West, loc. cit., p. 46. pi. 38. f. 14-15 

 (1905). 



Transeau: Coles, Ashmore — pond (June). 



