3,2 



THE LEAF 



36. Shape and Texture of Leaves. — Examine a number 

 of leaves of different liinds and see how they differ from 

 each other in regard to — 



General Outline : whether round, oval, heart-shaped, 

 lanceolate, etc. (Figs. 27-33). 



27~33' — Shapes of leaves: 27, lanceolate; 28, spatulate; 29, oval; 30, obovate; 

 31, reniform, or kidney-shaped ; 32, deltoid ; 33, lyrate. (27-31, fl/?tfr Gray.) 



Base : tapering, obtuse, truncate, cordate, etc. (Figs. 

 34-38). 



^m 



M^ 



38 



34-38. — Bases of leaves; 34, cordate; 35, sagittate; 36, oblique; 37, auricled; 



38, hastate. 



39-47.^ — Apexes of leaves : 39, acuminate; 40, acute; 41, obtuse; 42, truncate; 

 43,44, emarginate; 45, obcordate; 46, cuspidate; 47, mucronate (Gray). 



Apex : acute, acuminate, emarginate, etc. (Figs. 39-47). 



