128 A CATALOG OF ILLINOIS ALGAE 



Transeau 1914, p. 291; Collins 1918, p. 16: Coles, Ashmore, 

 Charleston, Lerna — ponds (Apr., May). 



S. REFLEXA Trans. Transeau, Ohio Jour. Sci. 16: 28 (1915). 



Transeau 1915, p. 28; Collins 1918, p. 16: Clark, Casey, Oilfield- 

 ponds (May). Coles, Lerna — ponds. Montgomery, CofTeen, Don- 

 nellson — ponds (May). 



S. RETICULATA Nordst. ColHns, Tufts Coll. Stud. 2(3): 17 (1909). 

 Transeau: Coles, Charleston, Lerna- — ponds and pools (May). 

 Lawrence, Lawrenceville — gravel pit (May). 



S. RUGOSA (Trans.) Czurda. Pascher, Suesswass.-fl. Mitteleur. 9: 156 



(1932). 



Spirogyra tenuissima var. rugosa Trans. 



Transeau 1913B, p. 77; 1914, p. 291; Collins 1918, p. 13, as 5. /. 

 var. rugosa: Clark, Casey — ponds (Apr.). Coles, Charleston, 

 Dorans, Lerna, Wrightsville — small streams, ponds and ditches 

 (Apr., May). 



S. SCROBICULATA (Stockm.) Czurda. Pascher, loc. cit., p. 182. f. 189. 

 Spirogyra varians var. scrohiculata Stockm. 



Transeau 1915, p. 23; Collins 1918, p. 12, as S. v. var. scrohicu- 

 lata: Coles, Charleston, Dorans — creek and pond (May). Law- 

 rence, Pinkstaff — pond (Mar.). 



S. SETiFORMis (Roth) Kuetz. Collins, Tufts Coll. Stud. 2(3): 111 



(1909). 



Transeau 1913B, p. 77; 1913C, p. 34; 1916, p. 124: Coles, Ash- 

 more, Charleston — ponds (all months). Lawrence, Pinkstaff — 

 pond 3 miles E. of (Oct.). 



S. siNGULARis Nordst. DeToni, Sylloge Algarum 1(2): 770 (1889); 



Transeau MSS. 



Britton: Lake, Everett — small pond about 1 mile S., Apr. 15, 

 1938, #71. 



S. SPREEIANA Rab. Collins, Tufts Coll. Stud. 2(3): 116 (1909). 



Transeau 1913B, p. 77: Coles, Ashmore, Charleston — ponds and 

 small streams (Apr.-June, Dec). Johnson & Atwell 1890, p. 20; 

 Britton: Cook, Glenview — swamp and temporary pond about 

 U miles W. on Central Road, May 12, 1938, #56; Woodlawn— 

 "Big Ditch" (Mar.-June). Transeau : Lawrence, Lawrenceville— 

 gravel pit (Apr.). 



S. SUBMAXIMA Trans. Transeau, Amer. Jour. Bot. 1 : 295. pi. 27. f. 3, 4 



(1914). 



Transeau 1913B, p. 77; 1914, p. 295; 1915, p. 27; Collins 1918, 

 p. 14: Coles, Ashmore, Charleston— ponds and bayou of Polecat 

 Creek (Mar.-Jan.). Douglas, Arthur — pond (May). 



S. TENUISSIMA (Hass.) Kuetz. Collins, Tufts Coll. Stud. 2(3): 115 



(1909). 



