THE BOOK OF NATURE STUDY 



whilst the portion overlapped by the succeeding scale is white 

 or greenish. The hairs of the scales are not black as in the Ash, 



but silvery. The foliage - leaves do not 

 occur between the lowest stipules, but 

 begin about the twelfth pair. In a bud 

 just on the point of opening a folded 

 foliage-leaf will be seen between each pair 

 of stipules, from the twelfth upwards. 

 The number of stipules and foliage-leaves 

 varies in the different buds ; the larger 

 ones have more leaves and stipules than 

 the smaller. 



The Black Poplar. The terminal bud 

 of the Black Poplar has from nine to ten 

 pairs of stipules, the two lowest being the 

 hardest. The foliage-leaves of the bud 

 are first found between the third pair of 

 stipules ; in this tree the stipules are 

 largely developed and gummy, in order to 

 protect the foliage-leaves inside. 



Lilac. The terminal bud of the Lilac 

 usually does not develop, its place being 

 taken by two lateral buds. In this shrub 

 the bud scales are small leaves, not enlarged 

 leaf -bases as in the Sycamore. They are 

 opposite each other, forming four rows, 

 and are from six to ten in number. The 

 scales gradually pass into ordinary leaves, 

 and may be regarded, therefore, as modi- 

 fied leaf -blades. The bud-scales of Honey- 

 suckle resemble those of Lilac in this 

 respect. 



The Conifers. --The bud -scales in a 

 Pine may number one hundred, or even 

 three hundred, in some species, and are 

 arranged spirally. They are small and 



brown, and bear in their axils a small bud ; each scale repre- 

 sents a whole leaf and not merely a leaf -base, or a leaf -blade. 



^> A> 

 & &> 



FIG. 26. Bud of Beech 



with stipules removed. 



