LESSON 4.] GROWTH OF PLANTS FROM BUDS. 



27 



than the others, and grows into a branch which is considerably out of 

 the axil, while the lower and smaller ones commonly do not grow at 

 all. In other cases the three buds stand side by side 

 in the axil, as in the Hawthorn, and the Red Maple 

 (Fig. 53). If these were all to grow into branches, 

 they would stifle or jostle each other. But some 

 of them are commonly flower-buds : in 

 the Red Maple, only the middle one is 

 a leaf-bud, and it does not grow until 

 after those on each side of it have ex- 

 panded the blossoms they contain. 



60. Sorts of Buds. It may be useful 

 to enumerate the kinds of buds which 

 have now been mentioned, referring 

 back to the paragraphs in which the pe- 

 culiarities of each are explained. Buds, 

 then, are either terminal or lateral. 

 They are 



Terminal when they rest on the apex 

 of a stem (42). The earliest terminal 

 bud is \he plumule of the embryo (16). 



Lateral, when they appear on the 

 side of a stem : — of which the only 

 regular kind is the 

 AxiUary (43), namely, those which are situated in 

 the axils of leaves. 



Accessory or Supernumerary (59), when two or more 

 occur in addition to the ordinary axillary bud. 53 



Adventitious (58), when they occur out of the axils and without 

 order, on stems or roots, or even on leaves. Any of these kinds 

 may be, either 



Naked, when without coverings ; or scaly, when protected by 

 scales (44, 45). 



Latent, 'when they survive long without growing, and commonly 

 without being visible externally (57). 



Leaf-huds, when they contain leaves, and develop into a leafy 

 shoot. 



Flower-buds, when they contain blossoms, and no leaves, as the 



FIG, 52. Butternut branch, with accessory buds, the uppermost above the axil. 

 FIG. 53. Red-Maple branch, with accessory buds placed side by side. 



