Oedogonium Kurzii Zeller 1873, p. 189 

 PI. 34, Fig. 10 

 Macrandrous; monoecious. Vegetative cells long, cylindric; (44)- 

 48.5-50- (52)^ in diameter and up to 260/^ long. Oogonia solitary; 

 oblong or subellipsoid; opening by a superior pore; (76)-88-90-(95)|U 

 in diameter, (lll)-118.4-120-(130)ja long. Oospores subglobose or 

 ellipsoid; not filling the oogonia; wall smooth, thick; (67)-82-84- 

 (86)/x in diameter, (80)-96.2-98;a long. Antheridia 2-15 in series, 

 frequently immediately below the oogonia; 40.7 ix in diameter, 11/x 



long. 



Attached to submerged aquatics in a slough. Wis. 



Oedogonium laeve Wittrock 1875, p. 8 



Macrandrous; monoecious. Vegetative cells cylindric, 10-14/x in 

 diameter, 20-70/x long. Oogonia solitary; depressed-globose; open- 

 ing by a median pore; 32-38/x in diameter, 24-30)u long. Oospores 

 depressed globose; filling the oogonia; wall smooth; 30-35/j, in 

 diameter, 23-26/x long. Antheridia 9-10/^ in diameter, 9-13;^ long. 



Mich. 



Oedogonium oviforme (Lewin) Hirn 1900, p. 116 



PI. 31, Figs. 7, 7a 



Macrandrous; monoecious. Vegetative cells cylindric, elongate; 

 (9.2)-15-23/. in diameter, (40)-96-135/^ long. Oogonia solitary; 

 obovoid or ellipsoid-ovoid; opening by a superior pore; (40)-48-55/t 

 in diameter, (51)-57-80/x long. Oospores ovoid; nearly filling the 

 oogonia; wall smooth; (42) -46-53/. in diameter, (48)-52-63/x long. 

 Antheridia 12-19/. in diameter, (7)-10-12/. long. 



Attached to aquatic moss. Wis. 



Oedogonium oviforme fa. gracile Prescott 1944, p. 352 



PI. 33, Figs. 6, 7 

 A form with more slender vegetative cells and smaller oogonia 

 than the typical plant. Vegetative cells 7.6-9.2/1 in diameter, 103.6- 

 125/t long. Oogonia solitary; ellipsoid-ovoid; 44.4-46/i in diameter, 

 51.8-53/x long. Oospores ellipsoid; nearly fiUing the oogonia; wall 

 smooth; 40.7/t in diameter, 49.9/t long. Antheridia 9.2/. in diameter, 

 ll.lfjL long; antherozoids 2, division horizontal. 

 Attached to submerged aquatics. Wis 



Oedogonium paludosum ( Hass. ) Wittrock 1871, p. 124 



Macrandrous; monoecious. Vegetative cells cylindric, 15-20/. in 

 diameter, 50-140/t long. Oogonia solitary; ellipsoid; opening by a 



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