9 8 



NATURE OF BUDS 



B 



FIG. 73. Bud type of stem: A, branch of hickory showing a large 

 terminal bud and several small lateral buds that were developed in the 

 axils of the leaves of the past season. The branch is three years old, as 

 shown by the three rings, r, r , r" , of the bud scars which mark the suc- 

 cessive positions of the terminal bud during the past three seasons ; /_, leaf 

 scars. B, branch of pear after Bailey. The ring at I shows the position of 

 a bud which produced the next year a pear, as is indicated by the large 

 scar and swollen branch at a. A short lateral branch was also developed 

 the same season with its terminal bud at 2. The next year this bud pro- 

 duced a branch that extended to 3, bearing several leaves (note leaf scars) 

 and of course axillary buds one of which, b, we see grew in the follow- 

 ing seasons. No fruit was developed this season. The bud formed at 3 

 behaved the next season very much as the one previously noted at i, 

 forming a pear at a' and a short lateral branch that reached to 4. Note 

 also that the axillary bud, b, of the previous season grew a little and its 

 subsequent history can be followed by the annual bud scars. In the fol- 

 lowing season bud 4 developed a vigorous shoot reaching to 5. No fruit 

 was formed but three buds survived, b' , b" ', b'", thus nearly duplicating 

 the growth of bud 2. Bud 5 develops the next season fruit at a" and also 

 two lateral shoots that extend to 6 and 7 respectively. The three buds 

 below 5 had only a feeble growth during this and the succeeding seasons 

 and bud b"' evidently perished during its first period of growth. End 6 



