CLASSIFIED CATALOG OF ILLINOIS ALGAE 61 



G. INTRICATUM var. VIBRIO (Ehr.) CI. Hustedt in Pascher, Suesswass.- 

 fl. Mitteleur. 10: 376. f. 698 (1930); Mills, Index Diat., pp. 790, 806 

 (1934). 



Gomphonema vibrio Ehr. 



Thomas & Chase 1887, p. 329, as G. vibrio: Cook, Chicago — Lake 



Michigan. 

 G. MONTANUM var. SUBCLAVATUM Grun. Boyer, Proc. Acad. Nat. Sci. 

 Phila. 79(SuppI. 2): 290 (1927). 

 Gomphonema subclavatum Grun. 



Transeau, as G. subclavatum: Clark — Whetstone Creek (Oct.). 

 G. OLIVACEUM (Lyngb.) Kuetz. Boyer, loc. cit., p. 296 (1927). 



Eddy 1927A, p. 131: Champaign, Urbana— drainage ditch ("fall 



and winter"). Transeau: Coles, Charleston — pond and small 



streams (Mar., May). Briggs 1872A, p. 44; Thomas & Chase 



1887, p. 329; Ahlstrom 1936, p. 292: Cook, Chicago, Evanston— 



Lake Michigan. Transeau: Cumberland, Greenup— ditch (Nov.). 

 G. OLIVACEUM var. calcarea CI. Hustedt in Pascher, Suesswass.-fl. 

 Mitteleur. 10: 379. f. 721 (1930). 



Ahlstrom 1936, p. 292: Cook, Evanston — Lake Michigan. 

 G. PARVULUM (Kuetz.) Grun. Boyer, Proc. Acad. Nat. Sci. Phila, 79 

 (Suppl. 2): 294 (1927). 



Transeau: Coles, Charleston — small stream (Oct.). 

 G. SEMIAPTERUM Grun. Boyer, loc. cit., p. 291 (1927). 



Thomas & Chase 1887, p. 329: Cook, Chicago — Lake Michigan. 

 G. SPHAEROPHORUM Ehr. Boyer, loc. cit., p. 292 (1927). 



Transeau: Coles, Charleston — pond (Apr.). Thomas & Chase 



1887, p. 329: Cook, Chicago— Lake Michigan. 



Family: CYMBELLACEAE 

 AMPHORA Ehrenberg, 1840 



A. NORMANi Rab. Hustedt in Pascher, Suesswass.-fl. Mitteleur. 10: 



343. f. 630 (1930). 



Transeau: Coles, Charleston^ — small stream (May). 



A. ovALis Kuetz. Boyer, Proc. Acad. Nat. Sci. Phila. 79 (Suppl. 2) : 



254 (1927). 



Briggs 1872A, p. 43; Thomas & Chase 1887, p. 328; Daily 1938, 

 p. 79: Cook, Chicago, Evanston — Lake Michigan. 



CYMBELLA Agardh, 1830 



C. AEQUALis W. Smith. Boyer, loc. cit., p. 276 (1927). 



Transeau: Coles, Charleston — creek (Mar.). 

 C. AFFiNis Kuetz. Boyer, loc. cit. (1927). 



Transeau: Clark — Whetstone Creek (Oct.). Coles — Indian Creek 



and draintile (Mar., May, Nov.). 



