(EDOGONIUM. 9 1 



Syn. Oe. Nordstedtii, Wittr. 



Plate LXXXII, figs. 4, 5, two male filaments ; fig. 6, 

 female plant. 



Pennsylvania, New York, Florida, and probably every 

 State. 



OEDOGONIUM PUNCTATO-STEIATUM, D. By. 



Oogonia single, depressed-globose, manifestly splitting 

 round in the middle, opening by a pore in the fissure ; 

 oospore depressed-globose, nearly filling the oogonium ; male 

 plant slightly more slender than the female ; spermogonia 

 3-7 celled, sperniatozoids single ; membrane of the vegeta- 

 tive cells and of the oogonia spirally punctate. 



Diameter veg. cells, fern., 18-22 yw; 2-6 times longer. 

 Diameter veg. cells, mas., 16-19 /<. 

 Diameter oogon., 48-55 p. by 38-48 yu. 

 Diameter oospor., 44-51 yu by 35-43 yw. 

 Diameter sperm, cells, 16-18 yu by 6-10 yw. 



Only specimens hitherto identified in the United States, 

 from Winter Park, Florida, 1885. Frequent there. 



Plate LXXXV, figs. 3, 4, 5, two female and a male plant. 



2. Oospor es ellipsoid or oval. 



OEDOGONIUM Boscn, (Le Cl. ) Wittr. 



Oogonia single or rarely twin, oblong-ellipsoidal, opening 

 by a pore above the middle; oospore ellipsoidal, by no 

 means filling the oogonium ; longitudinally costate ; male and 

 female plants nearly the same thickness; spermogonia 3-6 

 celled ; sperniatozoids binate ; terminal cell slender and 

 somewhat hyaline. 



Diameter veg. cells, 12-20 yu ; 4-6 times longer. 

 Diameter oogon., 40-45 yw by 80-100 //. 

 Diameter oospor. , 36-40 ^ by 60-65 /x 

 Diameter sperm, cells, 13-14 yw by 6-9 yw. 



Pennsylvania, New York, New Jersey, etc. 

 Plate LXXXII, figs. 11, male ; 12, 13, female plants. 



OEDOGONIUM LANDSBOROUGHI, (Hass.) Wittr. 



Oogonia single or twin, obovate, opening by a pore above 

 the middle ; oospore obovate, usually filling the oogonium ; 



