Oedogonium Westii Tiffany 1934, p. 325 

 PI. 39, Fig. 8 

 Nannandrous; idioandrosporous (?). Vegetative cells cylindrical 

 or somewhat capitellate, (17) -19.5-29- (35)^ in diameter, (81)- 

 117-163-(180)/x long. Oogonia solitary or as many as 3 in a series; 

 obovoid or ellipsoid; opening by a superior pore; 53-68/x in diameter, 

 67-99/i. long. Oospores obovoid or ellipsoid; filling the oogonia; 

 wall smooth; (49) -54.6-65/. in diameter, (49)-68.2-81/x long. Dwarf 

 male plants on suffultory cell. Antheridia 18/. in diameter, 13/* long. 

 On grass and other submerged aquatics in several soft water and 

 acid lakes. Wis. 



Section 6 

 Nannandrous — Gynandrosporous — Poriferous 



Oedogonium Braunii Kuetzing 1849, p. 366 

 Nannandrous; gynandrosporous. Vegetative cells cyhndric, 13-15/x 

 in diameter, 25-60/x long. Oogonia solitary; ovate or subglobose; 

 opening by a median pore; 30-37/. in diameter, 33-43/t long. 

 Oospores globose; wall smooth; 27-33/. in diameter, Antheridia 5-8/. 

 in diameter, 9-10/. long. 

 Mich. 



Oedogonium concatenatum Wittrock 1875, p. 25 



Nannandrous; gynandrosporous. Vegetative cells cylindric, 25-40/. 

 in diameter, 75-400/. long. Oogonia 1-6, subovate or quadrangular- 

 eUipsoid; opening by a superior pore; 63-83/. in diameter, 76-105/. 

 long. Oospores subovoid or quadrangular-eUipsoid; median wall 

 with pits arranged in longitudinal series; 60-75/. in diameter, 67-95/. 

 long. Antheridia 13-15/. in diameter, 12-25/. long. 



Mich. 



Oedogonium crassiusculum Wittrock 1871, p. 132 



Nannandrous; gynandrosporous. Vegetative cells cylindric, 27-30/. 

 in diameter, 95-105/. long. Oogonia 1-2; globose-ovate or subglo- 

 bose; opening by a superior pore; 54-60/. in diameter, 60-75/. long. 

 Oospores ellipsoid-globose or globose; wall smooth, thick; 51-57/. 

 in diameter, 52-63/. long. Antheridia 7-9/. in diameter, 9-16/. long. 



Mich. 



Oedogonium depressum Prigsheim 1858, p. 69 



Nannandrous; gynandrosporous. Vegetative cells cylindric, 8-9/. 

 iu diameter, 25-54/. long. Oogonia solitary (sometimes 2); globose 

 or subglobose; opening by a median pore; 28/. in diameter, 26/. long. 

 Oospores depressed-globose, not filling the oogonia; wall smooth; 

 23/. in diameter, 17-18/. long. Dwarf male plants 4-5/. in diameter, 

 14-16/. long. 



Mich. 



[197] 



