78 



BUDS AND STIPULES 



the stem throws out a process which almost meets that 

 of the petiole. 



A still further advance in the efficient protection ot 

 the bud by the petiole occurs in those species as, for 

 instance, in the Plane (Platanus, fig. 7, p. 6) where the 

 lower part of the petiole has closed completely round 

 the bud, covering it like an extinguisher : in such 

 species the bud is not where we should naturally expect 

 to find it, namely, in the angle between the petiole and 



Fig. 118. 



Fig. 119. 

 Kalmia latifolia. 



Small piece of shoot, entire (fig. 118), and enlarged in vertical section (fig. 119). 

 S, stem ; A, swelling in stem ; L, leaf -stalk. 



the stem, but enclosed in the base of the petiole itself. 

 For such buds the term ; intrapetiolar ' was proposed by 

 Benjamin, who first called special attention to them. 



In these cases, however, the protection seems to fail 

 just when it might seem to be most needed. At the 

 approach of winter the leaf falls off, leaving the bud 

 uncovered. Being thus thrown on its own resources, it 

 is compelled to protect itself, and we shall presently 



