242 



Explanation of Terms. 



(6) Hollowed, when the end is more or less hollowed 

 or notched. (Fig. ^.) 



FIG. o. 



FIG./. 



FlG. q . 



VI. 



The BASE of the leaf is : 



(1) Squared, when it is cut nearly or quite straight 

 across. (Fig. -r.) 



(2) Rounded. (Fig. ^.) 



(3) Pointed. (Fig. /.) 



(4) Wedge-shaped, when it tapers to a point by 

 straight lines. (Fig. #.) 



(5) Heart-shaped, when the edge is turned in at the 

 base, forming a notch or bend. (Fig. v.) 



FIG. r. 



FIG. j. 



FIG. v. 



VII. 



ARRANGEMENT OF LEAVES ON THE BRANCH. Leaves 



are : 



(1) Alternate, when they follow one another upon 

 different sides of the branch. (Elm, Walnut.) 



(2) Opposite, when they are in pairs, and upon oppo- 

 site sides of the branch. (Maple, Ash.) 



(3) Indeterminate, when they are closely crowded, 

 either in bunches (Pine, Larch), or singly up and down 

 the branches. (Spruce, Arbor Vitse.) 



