132 A CATALOG OF ILLINOIS ALGAE 



Z. STERILE Trans. Transeau, et al., Trans. Anier. Mic. Soc. 53: 212 

 (1934). 



Transeau, et al. 1934, p. 212. 

 Z. SUBCRUCIATUM Trans. Transeau, et al., Trans. Amer. Mic. Soc. 53: 

 212 (1934). 



Transeau, et al. 1934, p. 212. Britton: Cook, Glenview — swamp 



and temporary pond about 1^ miles W. on Central Road, May 



12, 1938, #56. 

 Z. SUBTILE Kuetz. Czurda in Pascher, Suesswass.-fl. Mitteleur. 9: 126 

 (1932). 



Transeau: Cumberland, Jewett — stream S. of (May). 

 Z. VAUCHERii Ag. Rabenhorst, Fl. Eur. Algar. 3: 250 (1868); Tran- 

 seau, MSS. 



Transeau: Montgomery, Coffeen- — lake (June). 



ZYGNEMOPSIS (Skuja) Transeau, 1934 



Z. DECUSSATA Trans. Transeau, et al., Trans. Amer. Mic. Soc. 53: 214 



(1934). 



Debarya decussata Trans. 



Transeau 1915, p. 19; 1916, p. 124; 1925, p. 197; Collins 1918, 

 p. 19, as Debarya decussata: Coles, Charleston- — ponds (Apr., 

 May). Montgomery, Coffeen — pond (May). 



ZYGOGONIUM Kuetzing, 1843; DeBary, 1885 



Z. ERICETORUM Kuetz. Trauscau, Ohio Jour. Sci. 33: 158 (1933). 

 Zygogonium decussatum Kuetz. 



Johnson & Atwell 1890, p. 20, as Z. decussatum: Cook, Evanston 

 — aquarium (Mar.). 



Family: MESOTAENIACEAE 



GENICULARIA DeBary, 1858 



G. SPIROTAENIA DeBary. West & West, Brit. Desmid. 1: 36. pi. 2, 5. 



f. 4-6, 3, 4 (1904). 



Agersborg 1930, pp. 108, 113: Macon, Decatur— warm waste- 

 water ditch (Dec. -Feb.). 



GONATOZYGON DeBary, 1856 



G. BREBissoNii DeBary. West & West, loc. cit., p. 31. pi. 1. f. 8-11 

 (1904). 



Kofoid 1908, p. 61: Mason, Havana — Illinois River (Mar.). 



