WINTER TREE STUDY 



19 



Terminal 



Axillary Bud 



Fruit Scac 



.Internode 

 _ Node 



.Lenticel 



Leaf Scar 

 Bundle Scar 



Scale Scars __ 

 Dormant Bud— 



--^._.-Pith 



Figure 5. 



In some species, 

 such as the cultivated 

 Cherry, a sharp dis- 

 tinction can be drawn 

 between r a p id 1 y- 

 grown long shoots 

 which have elongated 

 inter nodes 

 and continue 

 the growth of 

 the twig and 

 slowly grown 

 short spurs 

 which have 

 greatly ab- 

 breviat e d 

 .. internodes 



V.l years growth ^^^^^^^^_ 



" ed leaf-scars. The fruit- 

 spurs of the Apple and Pear 

 are of this latter type. 



Of the distinctive char- 

 acters given under the head- 

 ing tzvigs may be mentioned 

 the relative thickness, 

 whether stout or slender, 

 the presence or absence of 

 thorns or prickles, the col- 

 or, the taste as indicated 

 under the discussion of the 

 bark, and the character of 

 the surface, whether smooth 

 or more or less covered 

 with hairs. The color, 



size 



-Twig of Horse-chestnut 



and shape of the pith are often characteristic as seen in the wide 

 salmon-colored pith of the Kentucky Cofifee Tree and the star- 

 shaped pith of the Oaks. Some few trees have their pith sep- 

 arated by hollow chambers such as the Butternut. 



Leaf-scars — The arrangement of the leaf-scars form primary 

 divisions in the classification. They may be opposite with two 

 scars at a node as in the Horse-chestnut, or alternate with only 

 one scar at the node as in the majority of species. Alternate leaf- 



