14, ELEMENTARY BOTANY 
CFA ER 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 portions 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 
short. As the stem grows, the 
Fic. 16.—Szcrron OF AXILLARY nodes become further apart, 
3 Bun. ce a ; 
st, stem portion ; sc, scales; ¢,  °W8 to the growth in length 
foliage leaves, of the internode. 
Axillary Other buds arise in the angle which the leaf 
Buds. makes with the stem, 7.2, 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 ; 

