Fig. 17. Simple Leaves illustrating variety in Shapes and Edges 



1, Line-like; 2, lance-shaped; 3, elliptic; 4, egg-shaped; 5, egg-shape re- 

 versed; 6, heart-shaped ; 7, kidney-shaped ; S, heart-shape reversed ; 9, wedge- 

 shaped; 10, with "winged" stalk; 11, arrow shaped; 12, halbert-shaped ; 13, 

 awl-shaped ; 14, needle-shaped ; 15, 16, 17, leaves with deeply divided edges. 



