LAKE TO FOREST OR PRAIRIE 



235 



328 



329 



\ 



333 



FIGS. 326-334: Fig. 326. One of the pond weeds, Potamogeton natans; 

 Fig. 327. A club rush, Scirpus atrovit us; Fig. 328. S. Torreyi; Fig. 329. 

 S.validus; Fig. 330. A bog rush, Juncus ^altictis; Fig. 331. J. tennis; Fig. 33 2. 

 /. canadensis ; Fig. 333. J. effusus; Fi^ . 334. Spike rush, Eleocharis acicularis. 



