22 A CATALOG OF ILLINOIS ALGAE 



months); Wrightsville — small stream and pond (Apr., June). 

 Cook, Evanston — waste of waterworks (Apr.). Grundy, Dres- 

 den Heights— DesPlaines River (Aug., Sept.); Morris — IlHnois 

 River (July). La Salle, Marseilles — Illinois River (Aug., Oct.). 

 Lawrence, Pinkstaff- — bayou of Bee Branch Creek (Dec). 

 Macon, Decatur — warm waste-water ditch (Dec.-Feb.). Peoria, 

 Chillicothe — Illinois River (Sept., Oct.). Will, Lockport — Sani- 

 tary Canal and the DesPlaines River (Sept.). 



O. ORNATA Kuetz. ex Com. Geitler, loc. cit., f. 599a (1932). 



Solheim & Penfound 1928, p. 86: Champaign, Urbana — small 

 stream N. of (Apr., June). Britton: Cook, Sag Bridge — quarry 

 pond, Sept. 8, 1939, #1007 {fide Dr. F. Drouet). 



O. PRINCEPS Vauch. ex Gom. Geitler, loc. cit., p. 947. f. 598a, 601c-g 



(1932). 



Solheim & Penfound 1928, p. 86: Champaign, Urbana — small 

 stream N. of (Mar., May-Dec, Feb.). Transeau: Clark, Casey — 

 pond (May, July, Sept.). Transeau 1913B, p. 71; 1913C, p. 36: 

 Coles, Charleston — ponds, small streams, pools cut-offs and 

 laboratory aquaria (Apr.-Dec). Eddy 1927B, pp. 208, 219; 

 Britton: Cook, Chicago — Lake Michigan (Oct.); Sag Bridge — 

 swamp, Sept. 8, 1939, #988 {fide Dr. F. Drouet). Transeau: 

 Lawrence, Pinkstaff — spring-fed pond 3 miles E. of CJuly). Brit- 

 ton: McHenry, Woodstock — small pond E. of, July 7, 1939, 

 #424; small stream draining into Defiance Lake, Aug. 24, 1939, 

 #934. Transeau: ? County — Sangamon River (Aug.). 



O. PROLIFICA (Grev.) Gom. Geitler, loc. cit., p. 973. f. 620c (1932). 

 Agersborg 1930, pp. 103, 104, 106, 108-110, 113, 114: Macon, 

 Decatur — warm waste-water ditch (Dec.-Feb.). 



O. SANCTA (Kuetz.) Gom. Geitler, loc. cit., p. 943. f. 598c (1932). 

 Solheim & Penfound 1928, p. 86: Champaign, Urbana — small 

 stream N. of (June). Drouet, Field Mus. : Cook, Chicago— in 

 tanks and on wet soil and gravel in greenhouses at the Univ of 

 Chicago, coll. by P. D. Voth, J. M. Beal and F. Drouet, Oct. 5, 

 1938; from tank in Univ. of Chicago greenhouse, coll. by L. J 

 King, Jan. 20, 1941. 



O. SPLENDIDA Grev. ex Gom. DeToni, Sylloge Algarum 5: 173 (1907); 



Geitler, loc. cit., p. 972. f. 611m-o, 620d-f (1932). 

 Oscillaria gracillima Kuetz. 



Transeau 1913B, p. 71: Coles, Embarrass — stone-quary pond 

 (Mar.). Johnson & Atwell 1890, p. 173, as Oscillaria gracillima; 

 Drouet, Field Mus.: Cook, Chicago — aquarium, coll. by C. 

 Shoop Steyermark, May 1940; Evanston (?) — prairie ditches 

 (Mar.). Drouet, Field Mus. : Lake, Volo — floating in small lake in 

 center of bog 2 miles N.W. of, coll. by G. D. Fuller and D. 



