CLASSIFIED CATALOG OF ILLINOIS ALGAE 43 



D. HiEMALE var. MESODON (Ehr.) Grun. Boyer, Proc. Acad. Nat. Sci. 

 Phila. 78 (Suppl. 1): 176 (1927). 



Transeau: Lawrence, Pinkstaff — pond (Nov.). 

 D. VULGARE Bory. Boyer, loc. cit., p. 174 (1927). 



Kofoid 1903, p. 516; 1908, p. 50: Mason, Havana — Illinois River 



("sparingly at irregular intervals"); Topeka — Quiver Creek 



(Sept.-Apr.), 



Family: FRAGILARIACEAE 



ASTERIONELLA Hassall, 1850 



A. FORMOSA Hass. Boyer, loc. cit., p. 213 (1927). 



Babcock 1872A, p. 13; 1872B, p. 104; Briggs 1872A, p. 42; 

 Thomas & Chase 1887, p. 328; Jelliffe 1893, p. 310: Cook, Chi- 

 cago — Lake Michigan. Kofoid 1908, p. 43: Mason, Havana 

 — Illinois River (Nov.-Apr.). 



A. GRACILLIMA (Hantz.) Heib. Hustedt in Pascher, Suesswass.-fl. 



Mitteleur. 10: 147. f. 157 (1930). 



Eddy 1934, pp. 385, 386, 400: Adams, Calhoun — Mississippi 

 River (June). Eddy 1927B, pp. 207, 208, 215, 220] loc. cit. (1934): 

 Cook, Chicago — Lake Michigan (Apr., May, Sept.-Dec). Eddy, 

 loc. cit. (1934): Hancock, Jersey — Mississippi River (June). 

 Lake, Lake Villa — Sand Lake ("summer"). Agersborg 1930, 

 p. 110: Macon, Decatur— warm waste-water ditch (Dec.-Feb.). 

 Eddy, loc. cit. (1934): Madison — Mississippi River (June). Eddy, 

 loc. cit. (1934); Kofoid 1908, pp. 43, 44, 317: Mason, Havana- 

 Illinois River (all months). Eddy, loc. cit. (1934): Pike, St. Clair 

 —Mississippi River (June). Wabash, Mt. Carmel^ — Wabash 

 River (Apr.). Whiteside, Sterling — Rock River ("summer"). 



FRAGILARIA Lyngbye, 1819; Rabenhorst, 1864 



F. CAPUCiNA Desmaz. Boyer, Proc. Acad. Nat. Sci. Phila. 78 (Suppl. 



1): 187 (1927); Mills, Index Diat., pp. 715, 743 (1934). 

 Fragilaria rhabdosoma Ehr. 



Baker 1922, pp. 84, 85, 87: Champaign, Urbana — Salt Fork and 

 Spoon River. Transeau: Coles, Charleston, Loxa — ponds, ditches 

 and small streams (Mar., Apr., Oct., Nov.). Briggs 1872A, p. 43; 

 Thomas & Chase 1887, p. 328; Jelliffe 1893, p. 310: Cook, Chi- 

 cago — Lake Michigan. Bailey 1845, p. 34, as F. rhabdosoma: St. 

 Clair — Mississippi River. 



F. CAPUCINA var. mesolepta Rab. Boyer, loc. cit. (1927). 



Transeau: Coles, Charleston — ponds (Apr., Oct.). Thomas & 

 Chase 1887, p. 328: Cook, Chicago — Lake Michigan. 



