ON BUDS 7 



do not tit so closely, but the protection is enhanced by 

 numerous hairs. 



In the Plane (fig. 7) the base of the leaf-stalk is 

 hollowed out, forming a sort of cup or extinguisher, 

 which completely covers the young bud. By the time 

 the leaf drops the outer envelopes of the bud are suf- 



Fra. 8. Fig. 9. 



Unopened Buds of Norway Maple. Enlarged. 



Fk;. 8 shows a leaf-bod. Pre. 9 (a also a flowaSbnd. 



ficiently developed and strengthened to protect the 

 young and delicate leaves within. 



In Monocotyledons it is a general rule that the bases 

 of the leaves enclose and well protect the bud. 



Though leaves and flowers come out with a sur- 

 prising burst of vegetation in suitable spring weather, 

 their development is slow and gradual. The summer 



