CHAPTER II. 



AQUARIUM PLANTS. 



HE aquarium plants may be sub- 

 divided as follows, 



Rooted submerged plants. 



Rooted plants zvith floating leaves. 



Free swimming plants. 



Bog or swamp plants. 



ROOTED SUBMERGED PLANTS. 



These plants root in the bottom of the 

 aquarium and either do not reach the sur- 

 face of the water at all, or after having 

 reached it, continue to grow close to, and 

 beneath it, but without showing any part of 

 their vegetation above the surface. Some 

 of the submerged plants, however, develop 

 their flowers above the surface of the water 

 and in this case change the character of their 

 3° 



