140 PRACTICAL COURSE IN BOTANY 
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 areason for your answer. Make 
sketches in transverse and longitudinal sec- 
tion (see Figs. 162, 163) of two different 
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 
Fic. 164.—Twig originate from this source. 
of red maple, show +38. Supernumerary buds.— Where more 
ing supernumerary ; 
bud, b; rs, ring of than one bud develops at a node, as is so 
scars left by last : 
year’s bud scales, Often the case in the oak, maple, honey 
tA fer pak) locust, etc., all except the normal one in the 
axil are supernumerary or accessory. These must not be con- 
Y¥ Y 
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 are formed in 
each species. 
