24 A CATALOG OF ILLINOIS ALGAE 



P. INUNDATUM Kuetz. ex Gom. Geitler in Rab., Kryptog.-fl. Deutsch. 



14: 1019. f. 649e (1932). 



Baker 1922, pp. 80, 82-84, 86, 87: Champaign, Urbana— Bone- 

 yard Creek, Salt Fork and Spoon River. Transeau 1913B, p. 71 : 

 Clark, Oilfield — pond about 1 mile S.W. (Apr.). 



P. MiNNESOTENSE (Tild.) Drouet. Drouet, Field Mus. Nat. Hist., 



Bot. Sen 20: 136 (1942). 



Oscillatoria minnesotensis Tild. 



Solheim & Penfound 1928, p. 86, as Oscillatoria minnesotensis: 

 Champaign, Urbana — small stream N. of (May, Aug.). Drouet, 

 Field Mus. : Cook, Chicago — roadside ditch near Calumet Lake, 

 coll. by King and Young, July 1941. 



P. SUBFUSCUM (Ag.) Kuetz. ex Gom. Geitler in Rab., Kryptog.-fl. 



Deutsch. 14: 1022. f. 652d-g (1932). 



Drouet, Field Mus. : Cook, Lemont — in seepage at W. end of 

 quarry, coll. by G. T. Velasquez, D. Richards and F. Drouet, 

 Aug. 4, 1939. 



P. TENUE (Menegh.) Gom. Geitler, loc. ciL, p. 1004. f. 642d-e (1932). 

 Drouet, Field Mus.: La Salle, Starved Rock State Park — at- 

 tached to sides of Salt Well, coll. by D. Richards, P. D. Voth and 

 D. T. Ries, Mar. 22, 1940. 



P. UNCINATUM (Ag.) Gom. Geitler, loc. cit., p. 1025. f. 652h-i (1932). 

 Transeau 1913B, p. 71: Clark, Casey— pond (July). Coles, 

 Charleston — ponds, creeks, bayous, polls and ditches (Jan., Apr., 

 May, Sept., Nov.); laboratory aquarium (Apr.). Drouet, Field 

 Mus.: Cook, Chicago — in pool of standing water in lane near 

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

 and F. Drouet, Sept. 24, 1938; Lemont — in seepage on limestone 

 rocks in old quarry, coll. by D. Richards and F. Drouet, Apr. 15, 

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

 4, 1939. Transeau: Douglas, Arthur- — pond and pool (May, 

 Aug.). Forbes & Richardson 1913, pp. 506, 520: Grundy, Dres- 

 den Heights — DesPlaines River (Aug., Sept.). La Salle, Mar- 

 seilles — Illinois River (Aug., Oct.). 



SCHIZOTHRIX Kuetzing, 1843 



S. CALCicoLA (Ag.) Gom. Geitler, loc. cit., p. 1083. f. 692 (1932). 



Drouet, Field Mus.: Cook, Lemont — in seepage water on lime- 

 stone rocks along a small stream, coll. by D. Richards and F. 

 Drouet, Apr. 15, 1939. 



S. PURPURASCENS (Kuetz.) Gom. Geitler, loc. cit., p. 1103. f. 709 



(1932). 



Drouet, Field Mus.: Cook, Willow Springs — on soil by Route 

 4A, coll. by P. C. Standley, J. A. Steyermark and F. Drouet, 

 Oct. 18, 1938. 



