FLOWERS. 



49 



\ 



little glands are supposed to be, and no doubt are, organs 



of secretion. 



These are all in- 

 teresting items in the 

 study of the beautiful 

 and almost endless va- 

 riety of forms which 

 the different classes of 

 fruit trees, and even 

 different varieties of 

 the same class, exhibit 



Fig. 32. Fig. 33. 



Fig. 32, a leaf of the peach, with globular 



glands ; Fig. 33, the same, with reuiform, or 



kidney-shaped glands. 



in their foliage. 



SECTION 6. FLOWERS. 



1st. Different Parts of Flowers. Flowers are the 

 principal reproductive organs of trees, and consist of floral 

 envelopes, the calyx and corolla / and of sexual organs, 

 stamens, and pistils. Fig. 34, which represents a flower 



Fig. 34. Fig. 35. Fig. 36. 



Figs. 34 to 36. DIFFERENT PARTS OF A. FLOWER. 



Fig. 34, flower of the peach cut open longitudinally, A, the calyx ; .B, the petals ; 



C, stamens; Z>, pistil. Fig. 35, a stamen, A, filament, or stalk: -B, anther. 



Fig. 36, the pistil, A, ovary ; J?, style ; C, stigma ; the ovary is cut open to show 



the ovule, D. 



of the peach cut open lengthwise, shows the different 

 parts and their position. 



The Calyx (A, fig. 34,) is the outer covering, and is 

 usually green, like the leaves. Its parts are called sepals. 



