FIG. 208. Diagrams illustrating differences in the form, venation, margin, 

 and apex of leaves 



a-k, form and venation of leaves: a, lanceolate pinnate; 6, ovate pinnate; c, heart- 

 shaped palmate ; d, halberd-shaped palmate ; e, linear parallel ; /, oblong pinnate ; 

 g, oval pinnate; h, orbicular pinnate; i, oblanceolate pinnate; .;, spatulate pinnate; 

 k, obovate pinnate, l-r, different kinds of leaf margins : I, serrate ; m, double serrate ; 

 n, dentate ; o, crenate ; p, undulate ; <?, sinuate ; r, lobed. s-w, different kinds of 

 leaf apexes: s, acuminate; t, acute; ?/, obtuse; v, emarginate; w, mucronate 



