globose; outer spore wall smooth (middle wall wrinkled?); (32)-43/a 

 in diameter, (29)-36/a long. Male filaments on the suffultory cell, 

 11/x in diameter, 19-32/x long. Division of the suffultory cell basal. 

 On Chamaedaphne stems and grass in a small pond. Wis. 



Bulbochaete Furberae Collins 1918, p. 142 

 PI. 26, Fig. 2 



Nannandrous; gynandrosporous. Vegetative cells (10)-16-19/i, in 

 diameter, (30)-32-67-(75)/x long. Oogonia depressed-globose, 

 ( 36 ) -43.7- ( 45.6 )/x in diameter, ( 27) -30.4-33- ( 34 )/x long. Oospores 

 depressed-globose; outer spore wall deeply scrobiculate; (34)-39- 

 40ix in diameter, (25) -28-30- (32)^ long. Male filaments on the 

 oogonia, 8fi in diameter, 22/* long. Division of the suffultory cell 

 inferior. 



On Drepanocladus at bottom of a soft water lake, depth 35 feet. 

 Wis. 



Bulbochaete gigantea Pringsheim 1858, p. 71 

 PL 26, Fig. 1 



Nannandrous; gynandrosporous. Vegetative cells (15)-20-32/i, in 

 diameter, 45-100-(112)/>t long. Oogonia subdepressed-globose, 60- 

 70/* in diameter, 50-58/* long. Oospores depressed-globose; the 

 outer spore wall reticulate-scrobiculate; 58-68/* in diameter, 48-56/* 

 long. Male filaments on the oogonia; antheridia 13-14/* in diameter, 

 20-30/* long. Division of the suffultory cell submedian. 



In several small lakes and ponds. Mich., Wis. 



Bulbochaete hiloensis ( Nordst. ) Tiffany 1937, p. 13 



PI. 24, Fig. 1 

 Nannandrous; gynandrosporous. Vegetative cells 14-20/* in diam- 

 eter, 24-48/* long. Oogonia ellipsoid, patent, 28-33/* in diameter, 

 43-51/* long. Oospores ellipsoid; outer spore wall with longitudinal 

 crenulate costae; 26-30/* in diameter, 38-45/* long. Male filament 

 13-17/* in diameter, '30-34/* long. Division of suffultory cell superior. 

 Mich. 



Bulbochaete insignis Pringsheim 1858, p. 73 

 PL 26, Figs. 4-6 

 Nannandrous; gynandrosporous. Vegetative cells (19)-20-22-(25)/i 

 in diameter, (48) -55-62- (88)/* long. Oogonia oblong-ellipsoid, 

 (46)-48-56/* in diameter, (70)-74-90/* long. Oospores oblong- 

 ellipsoid; outer spore wall with high thick denticulate costae (that 

 in our specimens show evidence of being also coarsely punctate); 

 (44)-46/* in diameter, (70)-72-92/* long. Male filaments on the 



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