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rORREY BOTANICAL CLUB 



Vol. TI. 



iSTo. 1. 



RESERVE FOOD-MATERIALS IN BUDS AND 



SURROUNDING PARTS. 



r>Y "Byron D. IIalsted, Rutgers College, N. J. 



The purpose of this paper Is to consider the structure and 

 reserve food-contents of the buds and surrounding parts in 

 some of our trees and shrubs, with occasional reference to 

 nourishing substances as stored in other parts of perennial 

 plants. 



Particular attention will be paid to starch, because this is 

 one of the most important constituents of the assimilated 

 food of plants, is stored away in a granular form and admits, 

 by means of its pronounced and characteristic reaction with 

 iodine, of being easily detected and definitely located in the 

 tissue bearing it. 



Buds are the free extremities of branches, or, to place the 

 same idea in a different form, they are incipient branches, 

 whether located upon the free extremity or along the side of 

 a stem. In the former case they are called terminal, and in 

 the other lateral buds. As to their relation to growth they 

 may be active, that is undergoing elongation or branch 

 formation, or dormant, as illustrated by them in winter. It 

 is with these last that this paper will have most to do, for it is 

 in preparation for the inactive period that buds become most 

 highly developed, and their tissues charged with the nutritive 

 food-elements that are so much needed to push the plant for- 

 ward during the unfolding in spring. Buds are again divided, 

 as to their future development, into those that will produce 



Vol. II. — I. 



'J 



