DEVELOPMENT OF BUDS. 



99 



top, arising liiglier and liiglier, as it unfolds its axis into tlie 

 joints (called nodes and internodes) of the stem, its outer 

 scales into leav^es, and is itself continually renewed from 

 within. Thus the ascending stem, or axis^ is always termi- 

 nated by a bud. 



Fig. 829. Bud of Currant unfolding, — the scales (s) gradually becoming leaves. 

 Fig. 330. Bud of Tulip-tree,— the scales unfolding into stipules («). 



203. Soon other buds appear. There is one in the axil of 

 each leaf. So long as the terminal bud only is developed, 

 the plant grows up a simple stem. But by the gi-owth of 

 these axillary buds, if they grow at all, branches are pro- 

 duced ; and these branches, from their axillary buds, produce 

 branchlets, and so on. 



203. Wliat do you understand by tlie nodes and internodes ? How is the 

 axis always termipated ? 

 203. In what case will the stem be simple ? How are branches produced 



