CLASSIFIED CATALOG OF ILLINOIS ALGAE 29 



SCYTONEMA Agardh, 1824 



S. ciNCiNNATUM (Kuetz.) Thur. Bornet & Flahault, Ann. Sci. Nat. 

 VII. Bot. 5:89 (1887). 



Johnson & Atwell 1890, p. 20; Tilden 1910, p. 214: Cook, Lakeside 



—(May). 

 S. OCELLATUM Lyngb. ex B. & F. Geitler in Rab., Kryptog.-fl. 

 Deutsch. 14: 763. f. 488 (1932). 



Drouet, Field Mus. : Cook, Lemont — on clay bank of creek above 



quarry at E. edge of, coll. by G. T. Velasquez, D. Richards and 



F. Drouet, Aug. 4, 1939. 

 S. TOLYPOTRiCHOiDES Kuetz. ex B. & F. Geitler, loc. cit., p. 779. f. 500 

 (1932). 



Britton : Lake, Lake Zurich — in Lake Zurich, Aug. 24, 1939, #913 



(fide Dr. F. Drouet). 



TOLYPOTHRIX Kuetzing, 1843 



T. TENUIS Kuetz. ex B. & F. Geitler, loc. cit., p. 716. f. 458a (1932). 

 Transeau 1913b, p. 72; 1916, p. 125: Clark, Oilfield— wet weather 

 pools (May). Coles, Ashmore, Charleston — ponds and small 

 stream (Apr.-Oct.). Britton: Lake, Lake Zurich — in Lake 

 Zurich, Aug. 24, 1939, #916 (fide Dr. F. Drouet). 



Family: STIGONEMATACEAE 



STIGONEMA Agardh, 1824 



S. MiNUTUM (Ag.) Hass. Geitler, loc. cit., p. 513. f. 313-317 (1932). 

 Transeau: Coles, Charleston — pond (May). 



Family: RIVULARIACEAE 



AMPHITHRIX Kuetzing, 1843; Bornet & Flahault, 1886 



A. JANTHINA (Mont.) B. & F. Geitler, loc. cit., p. 572. f. 572 (1932). 

 Drouet, Field Mus.: Dupage, Black Partridge Woods — in 

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

 Oct. 18, 1938. 



CALOTHRIX Agardh, 1824 



C. KAWRAiSKYi Schmidle. Geitler, loc. cit., p. 619 (1932). 



Transeau 1913B, p. 72: Coles, Charleston — epiphytic on green 



algae in ponds (July, Sept.). 

 C. STAGNALis Gom. Geitler, loc. cit., p. 603. f. 377 (1932). 



Transeau 1913B, p. 72; 1913C, p. 33\ 1916, p. 124: Coles, 



Charleston — ponds (July, Sept.). 



