88 



ESSENTIALS OF BOTANY 



■ 1' 



106. Nature of Bud-Scales. — Tie fact that 

 the bud-scales are in certain cases merely im- 

 perfectly developed leaves or leaf-stalks is often 

 clearly manifest from the series of steps con- 

 necting the bud-scale on the one hand vrith the 

 young leaf on the other, which may be found in 

 many opening buds, as illustrated by Fig. 48. 

 In other buds the scales are not imperfect leaves, 

 but the little appendages {stipules, Figs. 63, 64), 

 which occur at the bases of leaves. This kind 

 of bud-scale is especially well shown in the mag- 

 nolia and the tulip tree. 



107. Naked Buds. — All of the buds above 

 mentioned are winter buds, capable of living 

 through the colder months of the year, and are 

 scaly buds. 



In the herbs of temperate climates, and even 

 in shrubs and trees of tropical regions, the buds 

 are often naked, that is, nearly or quite destitute 

 of scaly coverings (Fig. 49). 



Make a study of the naked buds of any convenient 

 herb, such as one of the common " geraniums " {Pelar- 

 gonium), and record what you find in it. 



108. Position of Buds. — The distinction be- 

 tween lateral and terminal buds has already been 

 alluded to. 



The plumule is the first terminal bud which 

 f ■ the plant produces. Lateral 



Tig. 49. Tip of Branch of ^iton- feuds are usually axillari/, as 

 ites in Winter Condition, show- , ■ tti- m ,t , ■ \i 



ing very Large Leaf-Scars and ^^O^^l. '"^ ^Ig. 58, that IS, they 

 nearly Naked Buds. grow in the angle formed by 



