78 A CATALOG OF ILLINOIS ALGAE 



Herposteiron confervicola Naeg. 



Solheim & Penfound 1928, p. 87: Champaign, Urbana — small 

 stream N. of (June). Transeau 1913B, p. 88; 1916, p. 124, as 

 Herposteiron confervicola: Clark, Casey — pond (July, Nov.). 

 Coles, Ashmore — pond (Apr.); Charleston — ponds (Jan., Apr.- 

 July,Nov.); Lerna— ponds (May). Johnson & Atwell 1890, p. 19; 

 Britton: Cook, Evanston — prairie ditches (Mar.); Glenview — 

 swamps and intermittent ponds about 2 miles W., May 12, June 

 23, 1938, #53, 56, 99; Northbrook — small ponds and swamp on 

 Techny Road just E. of Landwehr Road and Pfingsten Road 

 about 1 mile S. of Techny Road, May 12, 1938, #62, 64; Schnells 

 Corner — small pond at Elk Grove Forest Preserve, June 22, 1939, 

 #323. Transeau: Efl&ngham, Effingham — pond and ditch (Dec, 

 Mar.). Britton: Lake, Everett — small pond about f mile S., 

 May 10, 1938, #71; Libertyville— swamp E. of, July 14, 1938, 

 #120. 



CHAETOPHORA Schrank, 1789 



C. ATTENUATA Haz. Hazen, Mem. Torr. Bot. Club 11: 213. pi. 39. f. 



1, 2 (1902). 



Solheim & Penfound 1928, p. 87: Champaign, Urbana — small 

 stream N. of (May, June). 



C. ELEGANS (Roth) Ag. Hazen, loc. cit., p. 211. pi. 37. f. 1-3 (1902). 

 Solheim & Penfound 1928, p. 87: Champaign, Urbana — small 

 stream N. of (May-July). Transeau 1913B, p. 87: Clark, Casey- 

 ponds (Apr.); Whetstone Creek (June). Coles, Charleston — 

 ponds, ditches, springs and small streams (all months) ; Wrights- 

 ville — small stream (June). Johnson & Atwell 1890, p. 19; Brit- 

 ton: Cook, Evanston — (Apr.); Glenview — swamp and intermit- 

 tent ponds about H miles W., May 12, 1938, #53, 55-58; North- 

 brook — small ponds and swamps just E. and W. of Landwehr 

 Road on Techny Road, May 12, 1938, #60, 62, 63; small pond in 

 Somme Forest Preserve, May 15, 1938, #65. Transeau : Douglas, 

 Areola — stockyards (May); Arthur — pond and pools (May). 

 Jasper, Newton — pond (May). Montgomery, Coffeen — pond 

 (May). 



C. INCRASSATA (Huds.) Haz. Hazen, loc. cit., p. 214. pi. 38. f. 2, 3 



(1902). 



Chaetophora endiviaefolia Ag. 



Transeau 1913B, p. 87: Clark, Casey— ponds (Apr., May). 

 Coles, Ashmore — pond (May); Charleston — ponds, pools and 

 small streams (Dec-May); Dorans— pools (May); Wrightsville 

 ^ponds (Apr., May). Johnson & Atwell 1890, p. 19, as C. 

 endiviaefolia; Britton: Cook, Glenview — swamps and intermit- 

 tent ponds about \\ miles W., May 12, 1938, #53, 55-58; Niles- 



