\ 
14 ELEMENTARY BOTANY 
CHAPIER. 11 
BUDS 
Plumule, the /HE plumule is the first bud. As soon as the 
First Bud. plumule has begun to appear above the cotyledons, 
if it is cut lengthways through the middle and examined with 
a hand lens, it will be seen to consist of a central portion, the 
stem, and of lateral outgrowths, the leaves. 
All buds consist of: (1) This stem-like portion ; (2) leaves. 
Thus a bud is the germ of a shoot. | 
The stem portion of the bud 
is very short, and the leaves are 
crowded together. The part of 
the stem from which the leaves 
come is called the node (Latin 
nodus, a knot), and the part be- 
tween the leaves the internode. 
Apical The stem of a 
Buds. plant always ends 
in a bud —the apical bud; 
here the nodes are very close © 
together and the internodes 
a short. As the stem grows, the 
Ae eee or AXILLARY nodes become further apart, 
owing to the growth in length 
st, st-m portion ; sc, scales; 4, 
foliage leaves. of the internode. - 
Axillary Other buds arise in the angle which the leat 
Buds. makes with the stem, i.¢., in the axil; these are, 
therefore, called azillary buds. A section through an axillary 
bud shows, as in the plumule, stem and leaves. If all these buds 
developed, then wherever there was a leaf there would be a 
branch; but a great many of them remain dormant. Sometimes 
an axillary bud, which has been dormant for a long time, may 
form a branch in order to replace one which has been injured ; 

