HYDEOPHYTE SOCIETIES 
181 
like bodies (see Figs. 159, 160). These floats are very com- 
mon among certain of the seaweeds, and are found among 
higher plants, as the utricularias or bladderworts, which 
FIG. 162. A group of marine seaweeds (Laminarias). Note the various habits of the 
plant body and the root-like holdfasts. After KERNER. 
have received their name from the numerous bladders 
developed in connection with their bodies (see Fig. 161), 
and which are also put to additional uses. 
