140 PRACTICAL COIJRSU IN KOTANY 



ory, walnut, oak, etc., the position of the 

 flower clusters is different from that of 

 flowers in the buds of lilac and horse-chest- 

 nut. Look for a bud containing them, and 

 find out where they occur. Can the axis con- 

 tinue to grow after flowering, in this kind of 

 stem ? Give a reason for your answer. Make 

 sketches in transverse and longitudinal sec- 

 tion (see Figs. 162, 163) of two different 

 ,7 / kinds of buds, illustrating the terminal and 



axillary position of the flower cluster. 



157. Dormant buds. A bud may often 

 lie dormant for months or even years, and 

 then, through the injury or destruction of its 

 stronger rivals, or some other favoring cause, 

 develop into a branch. Such buds are said 

 to be latent or dormant. The sprouts that 

 often put up from the stumps of felled trees 



IK;. 164. Twig originate from this source. 



158. Supernumerarybuds.-Wlieremore 



i >M. I, i>; rs, ring of than one bud develops at a node, as is so 



scars left by last ri . . . 



i.u.i wales, often the case in the oak, maple, honey 



locust, etc., all except the normal one in the 

 axil are supernumerary or accessory. These must not be con- 

 founded with adventitious buds those that occur elsewhere 

 than at a node. 



Practical Questions 



1. Would protected buds be of any use to annuals ? Why, or why not ? 



2. Of what use is the gummy coating found on the buds of the horse- 

 chestnut and balm of Gilead ? (148.) 



3. Can you name any plants the buds of which serve as food for man ? 



4. How do flower buds differ in shape from leaf buds? 



5. At what season can the leaf bud and the flower bud first be dis- 

 tinguished ? Is it the same for all flowering plants ? 



6. Watch the different trees about your home, and see when the buds 

 that are to develop into leaves and flowers the next season arc formed in 

 each species. 



