THE LEAF-BUD. 



41 



61, Corm of Crocus, with new ones forming above ; 62, Vertical section of the same ; 63, Pac- 

 tion of bulb of Hyacinth with terminal scape and axillary bulblet ; 64, Section of bulb of Oxalia 

 viojacea, with axillary scapes. 



194. The tuber, corm and bulb are analogous forms approaching by degrees 

 to the character of the bud, which consists of a little axis bearing a covering of 

 scales. In the tuber the axis is excessively developed while the scales are reduced 

 to mere linear points. In the corm the analogy is far more 

 evident, for the axis is less excessive and the scales more 

 manifest, and lastly in the bulb the analogy is complete, or 

 overdone, the scales often becoming excessive. 



CHAPTER VI. 



THE LEAF-BUD. 



195. It is but a step from the study of the bulb 

 to that of the leaf-bud. Buds are of two kinds in 

 respect to their contents; the leaf-bud containing 

 the rudiments of a leafy stem or branch, the flower- 

 bud containing the same elements transformed into 

 the nascent organs of a flower for the purpose of 

 reproduction. 



196. The leaf-bud consists of a brief, cone- 

 shaped axis with a tender growing point, bearing a 

 protecting covering of imbricated scales and incip- 

 ient leaves. 



65. Branch of pear tree. The terminal bud a, having been de- 

 stroyed, an axillary bud supplied its place, and formed the axis 6. 

 c, Thickened branch with flower-buds, d, branch with leaf-bud*. 

 66. t, section of terminal bud ; I, of axillary bud. 



