98 



SCIENTIFIC AGRICULTURE. 



united at the edges, constituting a bell-form flower, (Fig. 3,) 

 or they may be separate, constituting a wheel-form flower. 

 Fig. e. 



Tig. 4. 



a 



The CALYX is the external part of the 

 perianth, consisting of a circle of leaves, 

 the same in number as those of the 

 corrolla, in some cases distinct, and in 

 others united: they are usually green: 

 these leaves are called sepals. Fig. 5, a. 



We see now, that a complete flower is 

 made up of four regular sets of organs, 

 viz : the stamens, pistils, receptacle and 

 perianth: these organs are arranged in 

 concsntric whorls, or rings: some of them may be absent, or 

 suppressed, some superfluous ones may be developed and some 



