TREES AND FORESTRY 



li:, 



-—Growth 

 of the 



FIG. 72. GROWTH OF THE SMOOTH SUMACH 



Recognized in winter by means of its tapering twigs 

 with their dead ends 



IV. Butternut, 



Sumach, Poison Su- 

 mach, Ailanthus, Sassa- 

 fras, Sweet Gain: Trees 

 (a- shrubs with light- 

 colored, more or less stout 

 and rigid twigs having 

 alternate buds. 



1. Butternut {Jug- 

 lans cinerea L.) can he 

 known in winter by its 

 long, yellowish brown 

 naked buds (Figs. 68 

 and 69). The terminal 

 bud is much larger than 

 the lateral buds and 

 shows outer reduced 

 leaves which are woolly. 

 The lateral buds are 

 stemmed, and have one 

 or more smaller buds 

 between them and their 

 respective leaf scars. 

 The leaf scat's are large 

 and contain three dis- 

 tinct U-shaped scars. 

 Each leaf has a downy 

 ridge above it. The 

 pith consists of trans- 

 verse chambers, between 

 brown walls, easily seen 

 when the twig is split 

 lengthwise (Fig. 71). 

 The butternut is a large 

 tree with coarse 

 bark. 



Black Walnut 

 (Juglans nigra 

 L.) resembles the 

 butternut, but can 

 be distinguished 

 by the gray color 



light 



