HOW BUDS OPEN 



39 



Gl. 



62. A single 



riower in 

 the pear 



cluster as 



geen at 7 

 a. M. on 



t In- ila\ Hi" 



its open- 

 ing. At 10 

 o'clock it 

 will be 

 fully ex- 

 panded, 



Opening of the 

 pear bnd. 



it does not. The length of the shoot usually depends more 

 On the lengths In (in in joints than on the number of leaves. 



93. how buds OPEN. When the bud 

 swells, the scales are pushed apart, the 

 little axis elongates and pushes out. In 

 most plants, the outside scales fall very 

 soou, leaving a little ring of scars. Notice 

 peach, apple, plum, willow, and other 

 plants. Fig. 36. In others, all the scales 

 grow for a time, as in the pear, Figs. 



57, 58. In other plants, the in- 

 ner bud-scales become green and 



almost leaf-like. See the maple 



and hickory. Fig. 59 shows a 



hickory bud. Two weeks later, 



the young shoot had pushed out 



and the enlarged scales were hanging (Fig. 60). 

 94. Sometimes flowers conn <>nt of tin buds. 



Leaves may or may not accompany the flowers. 



We saw the embryo flowers in Fig. 52. The 



bud is shown again in Fig. 57. In Fig. 58 it is 



opening. In Fig. Gl it is 

 more advanced, and the woolly un- 

 formed flowers are appearing. In 

 Pig. 62 the growth is more advanced. 

 In Pig. 63 the flowers are full blown: 

 and the bees have found them. 



95. Buds which contain or pro- 

 duce only leaves .ne leaf-buds. Those 

 which contain onl\ Mowers are flower- 

 buds oc fruit-buds. The latter occur 



on peach, almond, apricot , ami many 



very early spring-flowering plants. 



Pig. 64. The single flower is emerging from the apricot 



ii ;. Pear m lull m a 



tud 



m 



Pier. 65. Those which contain iioih Leaves and 



