CALYX, which when entire is called monosepaloiis ; divided, 

 polyijetalous ; and that each division is called a sepal ; — a 

 COROLLA, which wlien entire is monopetalons ; when divided, 

 polypetalous ; each division being called a ^jc/^? ; — stamens, 

 which are formed of a filament, to support the anther; 

 anther, which is divided into two lobes; pollen, a fluid and 

 a tube; — pistils, which are formed oi a germ, which is the 

 base of the style ; style, which is the channel from the 

 stigma to tlie germ ; stigma, which receives the pollen ; — 

 GERM, which, on being fertilized, is a receptacle for the peri- 

 carp; ovary, which develops into the pericarp; ovules, 

 which become the seed. 



120. You have been told that the calyx is to protect and 

 support the corolla; that the corolla is to protect the sta- 

 mens and pistils; that the stamens are designed to fertilize 

 the ovules in the germ of the pistil, and that thus the sta- 

 mens and pistils are the necessary organs of reproduction. 



Section" V. — Inflorescen-ce. 



121. In walking over the prairies of the Southwest, the 

 pupil must have noticed that the buffalo clover grows on its 

 stem very unlike the Texas star, that the Mexican blanket 

 puts out blossoms quite differently from the Houstonia, and 

 that the Elder bears no sort of resemblance in its flat clusters 

 of blossoms to the long tassel-like senna or fringe-like retama. 

 The peculiar style of each is called its manner of inflo- 

 rescence, and it furnishes another very striking distinc- 

 tion to aid us in classifying plants. When the flower 

 springs from a terminal branch and bears a flat- topped 

 cluster, as the mustard and cabbage, we call it a cyme (Fig. 

 81). When they grow in clusters and spread out regularly 



120. What are the indispensable organs of reproduction ? 



121. What is the subject of Section V. ? What is inflorescence ? What is a 

 cyme ? Example ? 



