206 



BUDS 



Position of Buds. — Buds are either terminal, located at the 

 tip of the stem : or lateral, occupying positions on the side of the 

 stem. (Fig. 185.) The plumule is the first ter- 

 minal bud of the seedling. The terminal bud is 

 usually larger and stronger than the lateral ones, 

 and its shoot usually makes more growth than the 

 shoots of lateral buds. 



Lateral buds usually occur in the 

 leaf axils and when so located are 

 called axillary buds. In many plants 

 extra buds called accessory buds oc- 

 cur, which may stand just above the 

 axillary bud, as in the Butternut, or 

 on either side of it, as in the Box-elder. 

 {Fig. 186.) 



Buds, called adventitious buds, often 

 spring from . stems, from roots, or 

 even from leaves with- 

 out any definite order. 

 In propagation by cut- 

 tings or layers, adven- 

 titious buds often have 

 an important part in the formation 

 of roots, and sometimes in the for- 

 mation of stems. Thus in the propa- 

 gation of Sweet Potatoes, adventitious 

 buds are depended upon to develop 

 the new plants. In Figure 187 is 

 shown the sprouts springing from the 

 adventitious buds on the stump of 

 the Basket Willow. In this case the 

 A, twig of Butternut; t, ter- sprouts are harvested after they be- 

 minal bud; a, accessory buds; come large enough to be woven into 

 axillary budj Z, leaf^scar. baskets, and a new lot of sprouts is 

 then produced from other adventitious 

 buds. In this way one can secure 

 many crops of stems from one stump. 

 On the other hand, adventitious buds are often a source of 

 trouble, as in the clearing of ground where the sprouts develop- 

 ing from the adventitious buds on the stumps and roots tend to 



Fig. 185.— 

 Branch of the 

 Hickory, show- 

 ing large ter- 

 minal bud (0 

 and smaller 

 lateralbuds {T) . 



-Accessory buds 

 of the Butternut and Box-elder. 



B, accessory buds (a) and axil- 

 lary bud {x) of the Box-elder. 

 After Bergen. 



