82 A CATALOG OF ILLINOIS ALGAE 



C. NiTELLARUM Jost. ColHns, loc. cU. (1909). 



Transeau 1913B, p. 88: Clark, Casey— pond (Aug.). Coles, 

 Charleston — ponds (May, Sept.). 



C. ORBICULARIS Pringsh. Collins, loc. cit., p. 314 (1909). 



Transeau 1913B, p. 88: Coles, Charleston— pond (Apr.), labora- 

 tory aquarium (Mar.). Wesley 1928, p. 2; Britton 1940, p. 71: 

 Cook, Chicago — lagoon in Washington Park (all months). 



C. SCUTATA Breb. Collins, loc. cit. (1909). 



Transeau 1913B, p. 88; 1916, p. 124: Clark, Casey— pond (Apr.). 

 Coles, Ashmore, Charleston, Lerna — ponds and pools (Apr.- 

 July, Oct.-Dec). Wesley 1928, p. 2; Britton: Cook, Chicago- 

 lagoon in Washington Park (all months); Glenview — small 

 temporary ponds in swamps about 1^ miles W. May 12, 1938, 

 #53, 55, 56, 58, Apr. 7, 1939, #228; Northbrook— swamp along 

 Landwehr Road about H miles S. of Techny Road, C. M. & St. 

 P. R. R. slough S. of Techny Road, small pond and swamp on 

 Techny Road just W. of Landwehr Road, small pond on Pfing- 

 sten Road about 1 mile S. of Techny Road, and small ponds and 

 swamps in Somme Forest Preserve, May 12, 1938, #28, 30, 60, 

 61, 65, 66. Transeau: Jasper, Newton— lily pond (May). 



C. SOLUTA (Breb.) Pringsh. Collins, loc. cit. (1909). 



Wesley 1928, p. 2: Cook, Chicago— lagoon in Washington Park 

 (all months). 



CHAETOSPHAERIDIUM Klebahn, 1892 



C. GLOBOSUM (Nordst.) Kleb. Collins, loc. cit., p. 281 (1909). 



Transeau 1913B, p. 87: Coles, Charleston— pond (Dec). 

 C. PRiNGSHEiMii Kleb. Collins, loc. cit. (1909). 



Transeau: Coles, Charleston — small stream (Feb., Mar.). 



Suborder: CLADOPHORINEAE 



Family: CLADOPHORACEAE 



BASICLADIA Hoffmann & Tilden, 1930 



B. CHELONUM (Coll.) Hofifm. & Tild. Hofifmann & Tilden, Bot. Gaz. 

 89:382. f. 1 (1930). 



Marshall & Hague 1938, pp. Ill, 112: Cook, Argonne Forest 

 Preserve — Maple Lake (Aug.). 



CLADOPHORA Kuetzing, 1843 



C. CANALicuLARis (Roth) Kuetz. Collins, Tufts Coll. Stud. 2(3): 351 



(1909). 



Johnson & Atwell 1890, p. 19: Cook, Lake Michigan— (Sept.). 

 C. CRISPATA (Roth) Kuetz. Collins, loc. cit., p. 354 (1909). 



Forbes & Richardson 1913, pp. 528, 531, 535: Bureau, Spring 



