ON THE PROTECTION OF BUDS 



85 



St. 



-Sc 



stipules, as well as the persistent pedestal of the leaf to 

 which they are attached, are densely lined on the inner 

 face with pale brown hairs like a thick fur, while they 

 are glabrous and dull olive-green externally. 



In Guaiacum qffidnale (figs. 131, 132) the stipules 

 are axillary and connate into 

 a rounded piece on each side 

 of the stem on which they 

 are inserted, covering the 

 space between the petioles, 

 but quite free from them. 

 They persist even after the 

 leaves have fallen, and be- 

 come only gradually broken 

 away from the top down- 

 wards. 



In Gardenia florida (fig. 

 133) also the four stipules of 

 the two opposite leaves are 

 connate, and form a sheath, which encloses the younger 

 parts of the bud. 



In Alstonia scholaris, belonging to the Apocynacece, 

 the leaves (fig. 134) are whorled at the apex of each 

 shoot in groups of six to nine, narrowly oblong- 

 elliptic, narrowed to both ends, but obtusely pointed. 



The short petioles are semi-terete, flattened above, 

 and furnished with a ligule or outgrowth from the base 

 of the upper face, protecting the bud. This ligule is 



FIG. 129. FIG. 130. 



PETTEKIA RAMENTACEA. 

 FIG. 129. Portion of shoot in winter, 

 x 2. FIG. 130. Ditto in spring, x 2. 

 Sc, scar of fallen leaf ; St, stipules 

 completely covering the bud in fig. 

 129, in fig. 130 pushed aside by the 

 developing bud (fe). 



