Bulbochaete crassa Pringsheim 1858, p. 72 

 PI. 25, Fig. 8 

 Nannandrous; gynandrosporous. Vegetative cells 22-26/i, wide, 

 44-(60)-70/* long. Oogonia subdepressed-globose, (52)-56-60/i, in 

 diameter, 42.5-47- (51)^ J^o^^g- Oospores depressed-globose with 

 scrobiculate outer wall, 51-58/;i in diameter, 41-48^ long. Male 

 filaments on the oogonia; stipe 9-11/^ wide, 32-33-(41)/x long. 

 Division of the suffultory cell median or supramedian. 

 On grass in the marshy end of a lake. Wis. 



Bulbochaete crassiuscula Nordstedt 1877, p. 30 



Nannandrous; idioandrosporous. Vegetative cells 22r-27ix in diam- 

 eter, 55-148|U, long. Oogonia subquadrangularly depressed-globose; 

 patent; 60-78/a in diameter, 50-62/x long. Oospores depressed- 

 globose; outer spore wall coarsely scrobiculate; 58-76;u, in diameter, 

 48-60/x long. Male filaments 12-14/x in diameter, 30-34/a long. 

 Division of suffultory cell superior (or supramedian). 



Mich. 



Bulbochaete crenulata Pringsheim 1858, p. 72 



Nannandrous; gynandrosporous. Vegetative cells 16-20jli in diam- 

 eter, 32-70/A long. Oogonia subdepressed-globose; patent; 43-48/i, in 

 diameter, 35-43/* long. Oospores depressed-globose; outer spore wall 

 coarsely crenulate or scrobiculate; 40— 46/a in diameter, 33— 40ju, 

 long. Male filaments 9— 10/x in diameter, 24— 26;u, long. Division of 

 suffultory cell median or inframedian. 



Mich. 



Bulbochaete dispar Wittrock in Wittrock & Nordstedt 1882, No. 401 



PI. 25, Figs. 6, 7 



Nannandrous; gynandrosporous. Vegetative cells (16)-25-30|U. in 

 diameter, (32)— 38— 70— (65) /x long. Oogonia depressed-globose, 

 44— 56— (58) /A in diameter, (42)— 50— 51/i. long. Oospores depressed- 

 globose; the outer spore wall scrobiculate; 40— 58/x in diameter, 

 38-48- ( 50 )/* long. Male filaments 11-12/x in diameter, (23)- 

 37— 38/i, long. Division of the suffultory cell supramedian to su- 

 perior. 



On grass in small lakes. Mich., Wis. 



Bulbochaete elatior Pringsheim 1858, p. 73 



PI. 26, Fig. 3 



Nannandrous; gynandrosporous. Vegetative cells (13)-15-17-(18)/a 



in diameter, (20) -36-56- (63)/* long. Oogonia depressed-globose, 



(34)-45-48/i in diameter, (31)-38-39/x, long. Oospores depressed- 



[149] 



