40 



AQUATIC PLANTS 



CERATOPHYLLUM 



Hornwort, as it is generally known, is mentioned here on account 

 of its resemblance to Myriophyllum, for which it is sometimes gathered. 

 It is an extremely poor aquarium plant, being very brittle and liable to 

 rapid decomposition. Besides its characteristic of being fragile, it may 

 also be recognized by having practically no roots, absorption taking place 

 in the leaves. 



Fig. 22. Myriophyllum 



Fig. 23. Greater Bladderwort 



UTRICULARIA 



Many kinds of Utricularia, or Bladderwort, are distributed in the 



Temperate Zone. One form has the appearance of the finely-divided 



leaves of Myriophyllum, but may be identified by the small bladders 



dotted throughout. Our figure 23 of U. vulgaris gives a good idea of the 



