50 



NAKED BUDS 



[CH. 



green leaves folded up inside the bud. Buds thus devoid 

 of a scaly envelope are termed naked, or open, and occur 

 in the following trees and shrubs : 



Viburnum Lantana Rhus typhina Alder Buckthorn 

 Barberry Bittersweet Lycium 



Mistletoe Jumper Ivy. 



In the Elder the outermost bud-coverings are scales, 

 but they cover the inner leaves of the bud so incompletely 

 that the latter is sometimes termed half- open, and some- 

 thing of the same kind results from the very early and 

 rapid elongation of the buds of the Honeysuckles, and 

 some other plants. 



8 



Fig. 32. Bud-scales and young leaves in order of succession from a 

 bud of Prunus Avium. Nos. 1 8 dissected from the resting bud ; 

 Nos. 917 from a bud in process of development into a shoot in spring. 

 1 and 9 are merely scales ; 2 and 12 are notched at the apex into two 

 teeth ; 5, 13 and 14 show a trace of lamina at the base of this notch. 

 In 3 and 15 the lamina is more distinct ; and in 8 and 16 the stipular 

 nature of the two teeth is evident. 6 and 7 completed stipules. 17 com- 

 plete young conduplicate leaf. (After Henry, Knospenstudien, 1846.) 



