86 A CATALOG OF ILLINOIS ALGAE 



B. RECTANGULARis Wittr. Tiffany, loc. cit., p. 13. pi. 5. f. 53 (1937). 

 Transeau 1913B, p. 86: Coles, Charleston— ponds (May). Tif- 

 fany 1928, p. 147; 1930, p. 45; 1937, p. 13. 



B. REPANDA Wittr. Tiffany, loc. cit., p. 12. pi. 6. f. 57 (1937). 



Britton: Cook, Glenview — swamps and temporary ponds about 

 H miles W., May 12, 1938, #53, 56; Techny— swamp about 2 

 miles S.W., May 12, 1938, #60. 



B. RETICULATA Nordst. Tiffany, loc. cit., p. 14. pi. 5. f. 52 (1937). 

 Bulbochaete insignis var. reticulata (Nordst.) Hirn 



Transeau: Montgomery, Coffeen — pond (May). Tiffany 1928, 

 p. 151 ; 1930, p. 49, as B. i. var. reticulata; 1937, p. 14; 1939, p. 91. 



B. SUBINTERMEDIA Elfv. Tiffany, Oedog. Monog., p. 36. pi. 2. f. 15 



(1930). 



Britton: Cook, Glenview — swamps and small temporary ponds 

 about H miles W., May 12, 1938, #56, 58; Techny— swamp 

 about 2 miles S.W., May 12, 1938, #60. 



B. VARIANS Wittr. Tiffany, N. Am. Fl. 11: 13. pi. 5. f. 47 (1937). 



Transeau 1913B, p. 86: Clark, Casey— pond (July). Coles, 

 Charleston, Lerna— ponds (July, May). Tiffany 1928, p. 147; 

 1930, p. 45; 1937, p. 13. 



B. VARIANS var. hawaiense Nordst. Tiffany, loc. cit., f. 49 (1937). 

 Transeau : Lawrence, Lawrenceville — gravel pit (May). Tiffany 

 1928, p. 148; 1930, p. 46; 1937, p. 13; 1939, p. 91. 



B. VARIANS var. subsimplex (Wittr.) Hirn. Tiffany, loc. cit., f. 48 



(1937). 

 Bulbochaete subsimplex Wittr. 



Transeau 1913B, p. 86: Coles, Ashmore— pond (May); Charles- 

 ton—pond (Oct.). Johnson & Atwell 1890, p. 19, as B. subsim- 

 plex: Cook, Woodlawn— (Mar.). Transeau : Montgomery, Coffeen 

 —pond (June). Tiffany 1928, p. 147; 1930, p. 45; 1937, p. 13; 

 1939, p. 91. 



OEDOGONIUM Link, 1820 



O. ACMANDRIUM Elfv. Tiffany, loc. cit., p. 48. pi. 19. f. 279 (1937). 

 Transeau 1913B, p. 82; Collins 1918, p. 65: Coles, Charleston- 

 ponds ("spring"), laboratory aquaria (Feb.). Britton: Cook, 

 Northbrook — small pond and swamp along Techny Road just 

 E. of Landwehr Road, May 12, 1938, #62. Tiffany 1930, p. 103; 

 1937, p. 48; 1939, p. 90. 



O. ACMANDRIUM var. STiCTOSPERMUM Skuja. Skuja, Acta Horti Bot. 



Univ. Latv. 4: 20 (1930). 



Britton 1942, p. 58: Cook, Glenview— swamp and intermittent 

 pond about \\ miles W. on Central Road, May 12, 1938, #56. 



O. ACROSPORUM DeBary. Tiffany, N. Am. Fl. 11: 72. pi. 26. f. 410 



(1937). 



