20 A CATALOG OF ILLINOIS ALGAE 



L. VERSICOLOR (Wart.) Gom. Geitler in Rab., Kryptog.-fl. Deutsch. 



14: 1059. f. 656f (1932). 



Forbes & Richardson 1913, pp. 520, 531; Bureau, Spring Valley 

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

 Oct.). 



MICROCOLEUS Desmazieres, 1823 



M. ACUTissiMUS Card. Geitler, loc. cit., p. 1138. f. 744a (1932). 



Drouet, Field Mus. : Cook, Chicago — on soil in a moist depres- 

 sion, 92nd St. and Stony Island Ave., coll. by P. D. Voth and F. 

 Drouet, Sept. 24, 1938. Dupage, Tiedtville — on bare soil in high 

 open wood, coll. by D. Richards and F. Drouet, Apr. 22, 1939. 



M. LACUSTRis (Rab.) Farl. ex Gom. Geitler, loc. cit., p. 1142. f. 749. 



750a (1932). 



Drouet, Field Mus. : Cook, Chicago — on moist soil in green- 

 house at Univ. of Chicago, coll. by P. D. Voth, J. M. Beal and 



F. Drouet, Oct. 5, 1938. Dupage — on path in Black Partridge 

 Woods; coll. by P. C. Standley, J. A. Steyermark and F. Drouet, 

 Oct. 18, 1938. Lake, Waukegan- — in a depression in sand dunes 

 at Dunes Park, coll. by F. Drouet, P. C. Standley and J. A. 

 Steyermark, June 14, 1940. 



M. VAGINATUS (Vauch.) Gom. Geitler, loc. cit., p. 1136. f. 741 (1932). 

 Drouet, Field Mus.: Cook, Chicago — on soil in a moist depres- 

 sion, 92nd St. and Stony Island Ave., coll. by P. D. Voth and F. 

 Drouet, Sept. 24, 1938; in shallow water of lagoon in Jackson 

 Park, coll. by D. Richards and L. J. King, Oct. 18, 1940; 

 Lemont — on path near spring in quarry at E. edge of, coll. by 



G. T. Velasquez, D. Richards and F. Drouet, Aug. 4, 1939. 

 Dupage — on mud flats along Illinois River opposite Lemont, coll. 

 by P. C. Standley, J. A. Steyermark and F. Drouet, Oct. 18, 

 1938; Tiedtville — on bare soil in high open woods, coll. by D. 

 Richards and F. Drouet, Apr. 22, 1939. 



OSCILLATORIA Vaucher, 1803 



O. ACUMINATA Gom. Geitler, loc. cit., p. 978. f. 603d (1932). 



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

 stream N. of (May, June). 



O. AGARDHii Gom. Geitler, loc. cit., p. 974. f. 618k, 621 (1932). 



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

 stream N. of (Feb.). Transeau 1913B, p. 70: Clark, Casey — reser- 

 voir ponds (Sept.). Coles, Charleston — pond (Sept., Nov.). 

 Drouet, Field Mus. : Cook, Chicago — waterbloom on quarry 

 pool at 92nd St. and Stony Island Ave., coll. by P. D. Voth and 

 F. Drouet, Sept. 24, 1938. 



