THE GAME BREEDER 



113 



more of it in the stomachs of canvas- rather long threadlike leaves, which pre- 

 backs than of any other species. All sent a loose broomlike appearance in the 

 told, 10 species of Potamogeton have been water. The plant is in some places 

 identified from duck stomachs, including known as foxtail grass. It is known 



also as eelgrass, and apparently is the 

 plant termed in Europe poker or poch- 



Fig. 9.— Potamogeton natans L. 



"■ ; ■: ^ ■; 



■ \}v slim/ 



"^s^-J 



Fig. 10 — Potamogeton lucens L. 



all but one of the 9 most widely rang- 

 ing forms. (Figs. 9-17). 



Description of Pondweeds. 



The most important species, so far as 

 known, is the sago pondweed (V.'pecti- 

 natus). This plant has numerous 



w 



y V?' » 



Fig 11 — Potamogeton heterophyllus Schreb. 



<Sfi 



III I , * 





' \JW 



\W if/ ■ 



f 



I 3 



mm 



Fig 12— Potamogeton lonchites Tuckerm. 



ard grass, after a duck closely related 

 to our redhead. In the autumn, sago 

 pondweed bears small clusters of light 

 brown seeds or nutlets near the surface 

 of the water, in form somewhat like loose 

 bunches of grapes. The other pond- 



