Bulbochaete angulosa Wittrock & Lundell in Wittrock 1875, p. 45 



PL 25, Fig. 4 



Nannandrous; gynandrosporous. Vegetative cells (13)-14-16- 

 {I8)ix in diameter, (20)-25-40-(45)/i, long. The oogonia angularly 

 globose (in our specimens), 38.6-42/z in diameter, (33)-38.6-39/i 

 long. Oospores the same shape as the oogonium; outer spore wall 

 smooth; (34)-36-40/A in diameter. Dwarf males on the oogonia, 

 7-8 fj. wide, IQ/x long. Androsporangium 11 fx in diameter, 8/t long. 

 Division of the suffultory cell supramedian (sometimes nearly 

 superior ) . 



Our specimens agree throughout with descriptions of this species 

 except that the division of the suffultory cell is more nearly superior 

 than median. 



On grass in a roadside fosse. Wis. 



Bulbochaete borealis Wittrock 1871, p. 138 

 PI. 25, Fig. 3 



Nannandrous; gynandrosporous. Vegetative cells (14.8)-16-(21)ju, 

 in diameter, (20)-21-26-(42)/i, long. Oogonia depressed-globose 

 ( 40) -44.4-46- ( 48 )/x in diameter, 36-37- ( 38 )/x long. Oospores 

 depressed-globose; outer spore wall finely scrobiculate; 38- (46) /a in 

 diameter, 32-33- ( 38 )/x in length. Male filaments on the suflFultory 

 cell (in our specimens) 10^ in diameter, 22/x long. Division of the 

 suffultory cell superior. 



Attached to grass in a small acid lake. Wis. 



Bulbochaete Brebissonii Kuetzing 1854, Tab. Phyc. 4, p. 19 

 Nannandrous; gynandrosporous. Vegetative cells 17-20/* in di- 

 ameter, 50-90/A long. Oogonia depressed-subquadrangular-globose, 

 42-50/x in diameter, 37-45/* long. Oospores depressed-globose, outer 

 spore wall coarsely scrobiculate; 40-80/* in diameter, 35-43/i long. 

 Dwarf males 10-12/* in diameter, 28-33/x long. Division of suffultory 

 cell basal. 



Mich. 



Bulbochaete congener Hirn 1900, p. 346 



PI. 25, Fig. 5 



Nannandrous; idioandrosporous. Vegetative cells elongate, (19) — 

 21-27/* in diameter, (40) -46-50- (75)/* long. Oogonia depressed- 

 globose, 44.8-54/1 in diameter, 37-43.9- ( 48 )/i long. Oospores glo- 

 bose; wall scrobiculate; (42)-44.8-(52)/i in diameter, (35) -38-46/* 

 long. Male plants on the oogonium, 9-15/i in diameter, 29-34/1, long. 

 Antheridial cell lO-ll/i wide, (14)-15.6-17/i long. Division of 

 suffultory cell inframedian. 



On grass in a marginal ditch of a Sphagnum bog. Wis. 



[148] 



