152 



OBGANOGBAPHY. 



at a short distance within it, the leaf is said to be indented or 

 toothed, of which we have several varieties. Thus if the teeth 

 are sharp like a saw and all point to the apex, the leaf is 

 serrate {fig. 288), as in the common Dead-nettle ; if these 



Fig. 296. 



Fig. 297. 



Fig. 298. 



Fig. 296. Sinuated leaf of tlie Oak, Fig. 



297. Spiny leaf of Holly {Ilex Aquifo- 

 lium). 



teeth are themselves serrate, it is hiserrate {figs. 295, b, and 

 311), as in the Nettle-leaved Bell-flower; or when the margin 

 is minutely serrate it is termed 

 serrulate, as in Barosma serrati- 

 foria. When the teeth are sharp, 

 but do not point in any particular 

 direction, and are separated by 

 concavities, the leaf is dentate 

 or toothed {fig. 284), as in 

 'NyrmphcBa dentata, and the lower 

 "^^f^ff^^^^^^. leaves of the Corn Blue-bottle ; 

 kfST^ ^ N, %(? Qp when the teeth are themselves 

 divided in a similar manner it 

 is duplicato-dentate {fig. 295, c). 

 When the teeth are rounded 

 {figs. 293 and 323) the leaf is 

 crenate, as in Horse-radish, and 

 Ground Ivy; or if these teeth 

 are themselves crenated it is hi- 

 crenate {fig. 295, a); or when 

 the leaf is minutely creiPated it is 

 said to be crenuldted. When the 



marffin presents alternately deep 

 ^iff' 298. Crisped leaf of a species v i -i.- -^ • 



nVArriw rnrn7.,ny concavities and convexities it is 



* 



of Mallow (Malva). 



sinuate, as in some Oaks {fig. 296); 

 when the margin is slightly sinuous and wavy, as in the Holly 

 (fig. 297), it is said to be wavi/ or undulated ; or when the margin 



