BUDS AND STIPULES. 251 
of the primary bud, in positions corresponding to the axils of 
primary but aborted leaves. 'They have the same structure as 
the primary ones, but are much simpler, and consist of a few 
pairs of stipules, the outer ones of which are comparatively large. 
These buds appear but seldom to become developed into branches 
on the expansion of the primary bud, but remain small. Acci- 
dents to the primary bud, however, would of course cause them 
to become developed into branches. 
The following is the composition of a flower-bud, that is, one 
containing amenta :— 
The first fourteen pairs of stipules, or thereabouts, have 
neither leaves nor amenta, but serve the purpose of protection. 
The first five pairs of stipules are very small and rounded ; 
the first pair are often acuminate or tailed. 
The sixth and seventh pairs are twice as large, roundly trian- 
gular, concave, finely ciliate. 
The eighth and ninth pairs are half the length of the bud, tri- 
angular, obtuse. 
The tenth pair are 2 the length of the bud, broadly triangular, 
wet covering great part of the bud, and pubescent on the 
ack, 
The eleventh and twelfth pairs are as long as the bud, and 
Covering $ of it, each stipule covering two faces of it, and the 
half of one stipule overlapping half of the other. The cilia are 
now much longer than those of the previous stipules. 
oo thirteenth and fourteenth pairs are pubescent on both 
ces. 
The fifteenth and sixteenth pairs cover a small, subcompressed, 
ary amentum of male flowers. The amentum is axillary, but 
ho leaf is discernible. 
sui, e teenth, eighteenth, and nineteenth pairs are much 
d an the two previous pairs, but otherwise similar, and 
pair protect an amentum. 
Lu entieth pair are small, membranous, silky on both 
x ta g a male amentum ; and the twenty-first pair cover 
stage T " to be a female inflorescence in a very minute or early 
absent or oa opment, In all these cases, leaves are entirely 
In d p. cre mible during the months of winter. aet 
As the tree hoe Oak the leafless scales are comparatively ew 
require so m Le to milder climates, perhaps the leaves do no 
LINN. J nuc protection. 
` OURN.—BOTANY, VOL. XXXIII. T 
