FUNCTIONS OP THE ORGANS OF THE FLOWER. 11 



into radical and cauline, and the latter make up the 

 flower, the parts of which are, four in number, viz.: 



calyx, corolla, stamens, and pistil. 



It is of great importance that you should make your- 

 selves thoroughly familiar with the different parts of the 

 plant, as just described, before going -further, and to 

 that end it will be desirable for you to review the pre- 

 sent diapter carefully,, giving special attention to those 

 parts which "were not perfectly plain to you on your first 



jEa ihB BBxt chapter, we shall give a very brief account 

 of tie uses of the different parts of the flower. If found 

 too difficult, the study of it may be deferred until further 

 progress has been made in plant-examination. 



CHAPTER II. 



FUNCTIONS OF THK OEOANS OF THE FLOWEE. 



14. The. chief use of the calyx and corolla, or fioral 

 envelopes, as they are collectively called, is to proteefi^, 

 other parts of the flower. They enclose the stamens and 

 pistil in ihie bud, and they usually wither away and dis- 

 ra^eaa: portly a&er the anthers have shed their pollen, 

 ^at'is, as we-diall presently see, as soon as their services 

 as protectors are no longer required. 



i0. The ctaroUas of flowers are usually bii^t-ee^ared, 

 and frequently sweet-scented. There is little doubt that 

 these qaalities serve to attract insects, which, in search 



