Bulbochaete praereticulata Jao 1936, p. 71 

 PI. 27, Fig. 6 



Nannandrous; idioandrosporous. Vegetative cells (16)-22-25/a in 

 diameter, (39) -40-93^ long. Walls of vegetative cells and oogonia 

 with spiral punctations. Oogonia globose or depressed-globose, 

 54-58- {62 A) fjL in diameter, (41) -50-54- (58)^ long. Oospores glo- 

 bose; the outer spore wall reticulate-scrobiculate; 52-58^ in diameter, 

 (41)-48.7-56|U, long. Male filaments numerous (in our specimens), 

 on the suflFultory cell or oogonium; stipe Q.l/x in diameter, 44.8|Li 

 long. Antheridial cell 11.7/i, in diameter, 13.6/a long. Division of 

 suflFultory cell median. 



On culms of rushes. Wis. 



Bulbochaete pygmaea Pringsheim 1858, p. 74 

 PL 27, Figs. 7, 8 



Nannandrous; gynandrosporous. Vegetative cells (ll)-14.8/x in 

 diameter, (10)-15-18/a long. Oogonia ellipsoid, (22)-23-27/x in 

 diameter, 29-37- (40) /a long. Oospores ellipsoid; the outer spore 

 wall ribbed with longitudinal costae which are punctate; 20-22-(23)|U, 

 in diameter, (30) -33-34- (38) /a long. Dwarf male filaments on 

 suflFultory cell, 11-12/^ in diameter, 22-23/^ long; stipe 14.8;u long. 

 Suffultory cell undivided. 



Attached to grass in a ditch through a Sphagnum bog. Wis. 



Bulbochaete rectangularis Wittrock 1871, p. 142 

 PI. 27, Figs. 9, 10 

 Nannandrous; gynandrosporous. Vegetative cells 15-23//, in diam- 

 eter, (20)-40-46/A long. Oogonia oblong-ellipsoid, 32-39;u, in diam- 

 eter, 45-56- ( 65 )/i, long. Oospores ellipsoid; outer spore wall costate; 

 29-37/x in diameter, (47)-49-55ja long. Dwarf male filaments usually 

 on the oogonia; stipe 14-18/x in diameter, 22-27/i, long. Antheridial 

 cell 8-10/x wide, 5-7 /x long. Division of the suflFultory cell supreme. 

 On culms of Scirpus. Mich., Wis. 



Bulbochaete regalis ( Wittr. ) TiflFany 1934, p. 323 

 PI. 28, Figs. 1, 2 



Nannandrous; gynandrosporous. Vegetative cells 18-21- ( 26 )/x in 

 diameter, 54-117//, long. Oogonia ellipsoid or ovoid-ellipsoid; erect; 

 (58)-68-70/,i in diameter, 90-108/a long. Oospores broadly ellipsoid; 

 outer spore wall with anastomosing, crenulate costae; 54-61//, in 

 diameter, 90-98/^ long. Dwarf male filaments on the oogonia; stipe 

 12.5/t in diameter. Antheridial cell 10.8/x in diameter. Division of 

 suflFultory cell supreme. 



Attached to grass in soft water lakes. Wis. 



[153] 



