Bulbochaete repanda Witbock 1875, p. 55 

 PL 28, Figs. 3, 4 



Nannandrous; gynandrosporous. Vegetative cells frequently re- 

 pand, (12)-15.6-17^ in diameter, (24)-39-60/t long. Oogonia 

 oblong-ellipsoid, (26)-31.2-^6/x in diameter, (43)-48-50-(58))u long. 

 Oospores oblong-ellipsoid; the outer spore wall showing about 6 

 costae with serrate margins; (20) -27.3- (33)/* in diameter, (40)- 

 46.8-50fi long. Dwarf male filaments 13.6/a in diameter, 35/i, long, 

 attached to the oogonia. Division of suffultory cell superior. 



On culms of rushes. Mich., Wis. 



Bulbochaete reticulata Nordstedt 1877, p. 32 

 PI. 28, Fig. 5 



Nannandrous; gynandrosporous. Vegetative cells (20)-22-26/a in 

 diameter, (42)-65-87/a long. Oogonia broadly ellipsoid, 42-50-(52)^ 

 in diameter, 63-80- ( 85 )/i, long. Oospores ovoid; outer spore wall 

 with anastomosing costae which are denticulate and transversely 

 adjoined by ridges to teeth in other costae; 42-50/x in diameter, 

 64-70-(83)/x long. Dwarf male filaments on the oogonia; stipe 17-20/x 

 in diameter, 30--33)a long. Antheridial cell 10-13/x in diameter, 6-10/i, 

 long. Division of suffultory cell superior. 



In a ditch through a Sphagnum bog. Wis. 



Bulbochaete scrobiculata (Tiff.) Tiffany 1934, p. 323 



PI. 28, Fig. 6 

 Nannandrous; gynandrosporous. Vegetative cells 8-13-(16)/a in 

 diameter, 28-42/a long. Oogonia depressed-globose (rarely almost 

 globose), 28-38-(44)/i, in diameter, 28--36|U long. Oospores depressed- 

 globose, 26-35- (42) /A in diameter, 26-.34/i, long. Dwarf male fila- 

 ments on the suffultory cell, 8/x in diameter, 17.5/x long. Division of 

 suffultory cell basal. 



On grass in a roadside swamp. Wis. 



Bulbochaete sessilis Wittrock 1872, p. 18 

 PI. 28, Fig. 12 



Nannandrous; gynandrosporous. Vegetative cells (19)-20-22-(26)/x 

 in diameter, 40-9()-( 108 )(U, long. Oogonia depressed-globose, 50-60- 

 (64) /A in diameter, (42)-44-50/a long. Oospores depressed-globose; 

 with smooth walls; (48)-50-54-(60);a in diameter, 42-48- ( 50 )/x 

 long. Dwarf male filaments on the oogonia; stipe 9-10/i, in diameter, 

 25-30/x long. Antheridial cell 10-12/x in diameter, 15-21ju long. 

 Division of suffultory cell superior. 



In a kettlehole pond. Wis. 



f 154 1 



