ON BUDS 3 



The bud may either be protected by older organs, 

 or its own outer envelopes may be modified for the 

 purpose. 



In some plants, especially those which are quick- 



FIG. 2. BEGONIA. 

 A, shoot seen from above. B, shoot seen from one side. Reduced. 



growing or natives of tropical countries, the buds are 

 comparatively naked and unprotected. Even in the 

 tropics, however, though protection is not needed 

 against cold, it is required against the burning sun- 

 light and against drought. 



B2 



