66 



DEVELOPMENT OF SHOOT 



[CH. 



of a leaf-blade at the tip, and the internode separating 

 them from the bud-scales is appreciably, though slightly, 

 longer than it was in the bud. These intermediate scales 

 again have no axillary buds, and will soon fall. 



Fig. 45. Diagram of the elongating shoot developed from the bud of 

 Fig. 44. The two lowermost pairs of scales have no axillary buds, and 

 the internode between their insertions does not elongate ; the next inter- 

 node scarcely elongates and the scales, also devoid of axillary buds, show 

 traces of lamina at their tips. The succeeding internodes are elongating 

 and the true leaves borne at the nodes have axillary buds. Uppermost 

 leaves and internodes not yet elongated. 



But the changes apparent in the next two or three 

 internodes are considerable, for not only have the inter- 

 nodes elongated to several times their length in the bud 

 state, but the leaves have expanded and become larger 

 and are no longer curved in at the tips; moreover buds 

 have been formed in their axils. 



At the tip, the temporary protection of the extreme 

 apex is still provided for by the curving over it of the 

 still young leaves : not only the uppermost pair which 

 we counted in the bud (Fig. 44), but also others which 

 are being formed anew at the advancing apex. 



