112 THE FIRST BOOK OF BOTANY. 



EXERCISE XLVII. 

 Parts of a Gamopetalous Corolla. 



FIG. 213. FIG. 214. 



Throat. 



^T~ Border, or 

 Limb. 



Tube. 



TUBE. That part of the corolla, whether long or 

 short, in which the petals are united together. 



LIMB, OR BORDER. The upper part of the corolla, 

 where the petals are not united. 



THROAT. The opening of the tube. 



COROLLA TUBES may be long or short, slender or 

 swollen, tapering or cylindrical, or with a pouch, or 

 sack, on one side. 



The LIMB may be narrow or broad, erect or 

 spreading; and, 



The THROAT is either open or constricted, hairy 

 or smooth. 



Note these features in describing gamopetalous 

 corollas. 



. The last exercises of this chapter introduce twenty or 

 thirty new terms, expressive of as many different ideas of form. 

 In learning the precise word for each form, proceed very slowly 

 from exercise to exercise, searching constantly for illustrative 

 specimens. Learn the names of the parts of a petal and of a 

 gamopetalous corolla. Let time he taken to examine all the 

 flowers that can be found, comparing their corollas with the 

 pictures, fixing, for each flower, upon the picture it most nearly 

 resemhles. 



