80 



ELEMENTS OF BOTANY. 



himself are not large enough to show in the most obvious 

 way the relation of the parts and their real nature. 



Fortunately, it is easy to 

 obtain a gigantic bud which 

 illustrates perfectly the struc- 

 ture and arrangement of buds 

 in general. 



Examine and sketch a cabbage 

 which has been split lengthwise 

 through the centre ^ and note 



(a) The short, thick, conical stem. 



(b) The crowded leaves which arise 

 from the stem, the lower and outer 

 ones largest and most mature, the 

 upper and innermost ones the smallest 

 of the series. 



Compare the section of the cabbage 

 with Fig. 60. 



Most of the buds so far con- 

 sidered are leaf-buds, that is, 

 their inner parts will develop 

 into leaves, and their central 

 axes into stems ; but some were 

 mixed buds, that is, they con- 

 tained both leaves and flowers 

 in an undeveloped condition. 



Flower-buds contain the rudi- 

 ments of flowers only. 



Sometimes, as in the black 

 walnut, the leaf-buds and flower- 

 »c scar left by faUen leaf ;J"8t above ^^g^^ ^^^ readily distinguishable 



tniB IS an ordinary bud, and stiU ■' ° 



higher up, ace, an accessory bud. by their difference in form, while 



in other cases, as in the culti- 

 vated cherry, the difference in form is but slight. 



Fig. 58. —A Twig of Black Walnut. 



> Half of a cabbage will be enough for the entire division. 



