ENQUIRY INTO PLANTS, IV. v. 6-vi. 2 



produce this tree. At any rate those which King 

 Dionysius the Elder planted at Rhegium in the park, 

 and which are now in the grounds of the wrestling 

 school and are thought much of, 1 have not been able 

 to attain any size. 



Some of these regions however have the plane 

 in abundance, and others the elm and willow, others 

 the tamarisk, such as the district of Mount Haemus. 

 Wherefore such trees we must, as was said, take to 

 be peculiar to their districts, whether they are wild 

 or cultivated. However it might well be that the 

 country should be able to produce some of these 

 trees, if they were carefully cultivated : this we do 

 in fact find to be the case with some plants, as with 

 some animals. 



Of the, aquatic plants of the Mediterranean. 



VI. However the greatest difference in the natural 

 character itself of trees and of tree-like plants gener- 

 ally we must take to be that mentioned already, 

 namely, that of plants, as of animals, some belong 

 to the earth, some to water. Not only in swamps, 

 lakes and rivers, but even in the sea there are some 

 tree-like growths, and in the ocean there are even 

 trees. In our own sea all the things that grow are 

 small, and hardly any of them rise above the sur- 

 face 2 ; but in the ocean we find the same kinds 

 rising above the surface, and also other larger 

 trees. 



Those found in our own waters are as follows : 

 most conspicuous of those which are of general 

 occurrence are seaweed 3 oyster-green and the like ; 

 most obvious of those peculiar to certain parts are the 



' Plin. 13. 135. 



329 



